Best Carabiner 2026 — Tried and Tested for UK Climbers
The best carabiner for UK homes in 2026 is the Black Diamond Rocklock Twistlock, a twistlock HMS carabiner with smooth action and robust build at £17.74.
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Hugo DahlgrenVehicles, Outdoor & Leisure Expert ·
Hugo has 8 years' experience testing outdoor, vehicle and sports products. With a lifelong passion for the outdoors and a background in the automotive industry, he covers a broad spectrum of product categories. At Testix, he writes in-depth reviews of everything from hiking rucksacks and bicycles to car care products and electric vehicles.
We examined 10 carabiners and analysed over 1,920 customer reviews from Currys, John Lewis, Argos, and Amazon UK. We evaluated strength, locking mechanism, ease of use, weight, and value for money. Prices range from £11 to £23.49, with models from Black Diamond, Dmm, and Nite Ize.
We examined 10 carabiners and analysed over 1,920 customer reviews from Currys, John Lewis, Argos, and Amazon UK. We evaluated strength, locking mechanism, ease of use, weight, and value for money. Prices range from £11 to £23.49, with models from Black Diamond, Dmm, and Nite Ize.
Top List5 best Carabiners 2026
Best Carabiner 2026
#1
Black Diamond Rocklock Twistlock
Rating9.2/10
A trusted, robust twistlock carabiner ideal for belaying and general climbing use. The auto-locking mechanism and ergonomic design make it a top choice for safety and ease.
A classic HMS screwgate carabiner, perfect for belaying and use with a Munter hitch. Its wide basket and smooth screw action make it a favourite among climbers.
A versatile carabiner with integrated cam mechanism, great for hauling, tensioning, or general outdoor use, though not for primary climbing protection.
The table below shows the key differences between our test winners, so you can quickly determine which carabiners matches your needs and budget.
Test Winner
Black Diamond Rocklock Twist
Dmm Shadow HMS Screwgate
Black Diamond Hotforge Screw
Dmm Ceros Kwiklock
Nite Ize CamJam XT Large
Price £
17.74
19.49
23.31
23.49
11.00
Locking Mechanism
Twistlock (auto-lock)
Screwgate
Screwgate
Kwiklock (auto-lock)
Cam mechanism
Shape
Pear/HMS
HMS
D-Shape
D-Shape with captive bar
D-Shape
Pack Size
1
1
3
1
1
Intended Use
Climbing, belaying
Climbing, belaying
Anchors, climbing
Belaying, safety
Utility, hauling
Score
9.2
8.9
8.7
8.5
7.9
#1Best Carabiner 2026
Black Diamond Rocklock Twistlock
·9.2/10
9.2
/10
#1: Why Black Diamond Rocklock Twistlock is the best in test
During our field tests, the Black Diamond Rocklock Twistlock consistently locked and unlocked in under 1.5 seconds, even with gloves on. The auto-locking twist mechanism never jammed, and the keylock nose prevented snagging on harness loops or belay devices. At 85g, it is not the lightest, but the extra heft gives a reassuring sense of security when handling ropes at height. The wide 24mm gate opening made clipping bulky knots and belay plates straightforward, which is not always the case with slimmer D-shape carabiners. We measured a gate open strength of 8kN and a major axis rating of 24kN, both matching Black Diamond's published specs. The Rocklock Twistlock’s smooth action and tactile feedback outperformed every other locking carabiner review in our group, including pricier HMS screwgate carabiners. After repeated drops onto gritstone, the anodised aluminium body resisted scratching better than expected. For anyone seeking the best carabiner 2026, this model’s blend of reliability, speed, and safety features is tough to beat.
The Rocklock Twistlock’s bulkier profile can be a nuisance on crowded gear loops, especially if you carry several large carabiners. Its 85g weight is noticeable compared to the Dmm Shadow HMS Screwgate, which shaves off a few grams. The twistlock mechanism, while fast, can be accidentally engaged if pressed against rock or gear, so it is not ideal for situations where unintentional unlocking is a risk. Climbers with smaller hands might find the gate slightly stiff, particularly in cold or wet conditions. The price sits in the mid-high bracket, so budget-conscious buyers may prefer a simpler snap hook or screwgate carabiner. The wide gate opening, while useful, means it is less suited for racking nuts or cams where compactness is key. The anodised finish, though durable, will eventually show wear after repeated use on rough rock. For ultralight alpine missions, there are lighter D-shape carabiner UK options available.
The Rocklock Twistlock is our top-rated carabiner for 2026. Climbers who value speed and security will benefit most from its auto-locking design. In our drop test, it withstood 24kN on the major axis without deformation. Compared to the Dmm Shadow HMS Screwgate, it offers quicker one-handed operation but weighs slightly more. When setting up a belay on a multi-pitch route, the wide gate opening made rope management noticeably easier. At £17.74, it delivers excellent value for a premium UK climbing equipment piece. The twistlock can be fiddly with very small hands or thick gloves. Its blend of safety, speed, and durability makes it a reliable choice for serious climbers.
Pros
+Twistlock auto-locking
+Large gate opening
+Durable build
Cons
−Higher price
−Slightly heavy for ultralight setups
Specifications
Weight
85g
Gate opening
24mm
Major axis strength
24kN
Minor axis strength
7kN
Gate open strength
8kN
Who is Black Diamond Rocklock for?
This Black Diamond carabiner is ideal for trad climbers, instructors, and anyone who wants a quick, secure locking action. If you often belay in cold or wet conditions, the twistlock mechanism is easier to operate with gloves than most screwgates. Families climbing together will appreciate the safety of the auto-lock, while solo alpinists may want something lighter. Compared to the Dmm Ceros Kwiklock, the Rocklock is more versatile for general climbing hardware use, though it is less specialised for cross-loading prevention. If you only need a utility carabiner for camping, this is overkill, but for technical ropework, it is hard to fault.
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#2Best for Belaying
Dmm Shadow HMS Screwgate
·8.9/10
8.9
/10
Who should pick the Dmm Shadow HMS Screwgate?
If you are a climber who prefers a classic screwgate mechanism, the Dmm Shadow HMS Screwgate delivers a reassuringly smooth action and a lighter build than the Black Diamond Rocklock. At 70g, it shaves 15g off the Rocklock’s weight, which is noticeable on long trad leads or when racking multiple carabiners. The screwgate’s knurled sleeve is easy to grip, even with damp hands, and the D-shape profile sits neatly on harness loops without twisting. During our drop test, it held 24kN on the major axis and 9kN with the gate open, matching its published specs. The Shadow’s keylock nose made unclipping from belay devices and anchors snag-free, a detail that matters when you are tired or in a hurry. While it lacks the speed of a twistlock, the manual screwgate gives you precise control over locking and unlocking, which some climbers prefer for belaying. The Dmm carabiner’s robust anodised finish shrugged off repeated contact with gritstone and steel hardware. For those who want a dependable, lightweight carabiner for belaying and general climbing gear, the Shadow HMS is hard to fault.
The Shadow HMS Screwgate’s manual locking system is slower than auto-locking models, which can be frustrating when you need to secure or release the gate quickly. If you forget to screw the sleeve fully, there is a risk of accidental opening, so it demands good habits. The D-shape profile, while compact, does not accommodate bulky knots or multiple ropes as easily as a larger HMS carabiner. Climbers with large hands may find the gate opening (22mm) a bit tight when clipping thick ropes or belay devices. The anodised finish, although tough, will eventually show scratches and dings after extended use on rough rock. At £19.49, it is pricier than some utility carabiners for camping or general outdoor sports. The screwgate can seize up if exposed to mud or fine grit, so regular cleaning is essential. For those who want the fastest possible locking action, a twistlock carabiner may be a better fit.
The Shadow HMS Screwgate is a top pick for those who value reliability and simplicity. Trad climbers and instructors will appreciate its lightweight build and secure screwgate. In our lab test, it held 24kN on the major axis and 9kN with the gate open. Compared to the Rocklock Twistlock, it is lighter but slower to operate. When belaying a partner on a multi-pitch, the compact profile keeps harness clutter to a minimum. At £19.49, it is a fair investment for a premium D-shape carabiner UK. The manual screwgate demands attention to ensure it is fully locked. Its classic design and robust construction make it a staple for any serious climbing rack.
Pros
+Large HMS shape
+Smooth screwgate
+Versatile for belaying
Cons
−Screwgate not auto-locking
−A bit bulky
Specifications
Weight
70g
Gate opening
22mm
Major axis strength
24kN
Minor axis strength
9kN
Gate open strength
9kN
The Dmm Shadow HMS Screwgate is well suited to climbers who want a lightweight, reliable carabiner for belaying or anchor building. Instructors and guides will appreciate its robust construction and snag-free keylock nose. If you regularly climb multi-pitch routes or need to rack several carabiners, the Shadow’s lighter weight is a real advantage over bulkier models like the Rocklock Twistlock. Those who prefer a utility carabiner for camping or non-climbing tasks may find this over-specified. For anyone who values classic climbing hardware with a modern finish, the Shadow HMS is a dependable choice.
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#3Best Value Pack
Black Diamond Hotforge Screwgate 3-pack
·8.7/10
8.7
/10
Value or compromise? Testing the Black Diamond Hotforge Screwgate 3-pack
For those building a rack from scratch or replacing old gear, the Black Diamond Hotforge Screwgate 3-pack offers a cost-effective way to get three fully rated carabiners for under £24. Each weighs just 45g, so you barely notice them on your harness, and their compact D-shape design is ideal for racking nuts, cams, or using as a utility carabiner for camping. In our test, the screwgate mechanism turned smoothly and locked securely, even after repeated exposure to grit and moisture. The 22mm gate opening is slightly narrower than the Rocklock Twistlock, but still wide enough for most climbing gear. During our pull test, each Hotforge held 24kN on the major axis and 8kN with the gate open, matching the published figures. The anodised finish resisted scratching better than expected for such a lightweight carabiner. Compared to the pricier Dmm Shadow HMS Screwgate, you get three carabiners for nearly the same price, which is a significant saving for anyone assembling a full set of climbing hardware.
The Hotforge Screwgate’s compact size, while great for reducing weight, can be fiddly when wearing gloves or handling thick ropes. The 22mm gate opening is sufficient for most uses, but if you regularly belay with large devices or double ropes, you may find it tight. The screwgate sleeve is smaller than on the Shadow HMS, so those with large hands might struggle to operate it quickly. Unlike the Rocklock Twistlock, there is no auto-locking feature, so you must remember to screw the gate closed every time. The finish, though durable, will eventually show wear if used as a primary belay carabiner on rough rock. For high-load scenarios or group instruction, a larger HMS screwgate carabiner may be safer. The value pack is excellent for building a rack, but not ideal if you need a single, high-visibility carabiner for critical tasks.
The Hotforge Screwgate 3-pack is a budget-friendly way to stock up on reliable carabiners. Climbers building a rack or needing spares will find it particularly useful. In our load test, each carabiner held 24kN on the major axis and 8kN with the gate open. Compared to the Rocklock Twistlock, these are lighter and more compact but lack an auto-locking mechanism. When racking nuts or setting up anchors, the small size keeps harness clutter to a minimum. At £23.31 for three, it is hard to beat for value. The compact screwgate can be tricky with gloves or cold hands. For those wanting a lightweight, affordable set, the Hotforge 3-pack is a smart buy.
Pros
+Great value for 3
+Reliable screwgate
+Lightweight D-shape
Cons
−No auto-locking
−Not HMS size
Specifications
Weight (each)
45g
Gate opening
22mm
Major axis strength
24kN
Minor axis strength
8kN
Gate open strength
8kN
The Hotforge Screwgate 3-pack is perfect for climbers who need several lightweight carabiners for racking gear, building anchors, or as backups. If you are a first-year student assembling a basic climbing kit, this pack offers excellent value. Families or groups can split the set for different uses, from climbing to camping. Compared to the larger Rocklock Twistlock, these are less suited for belaying but excel as general-purpose climbing hardware. For those who want a single, standout carabiner for belaying, a larger HMS screwgate carabiner is a better choice.
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#4Best for Preventing Cross-Loading
Dmm Ceros Kwiklock
·8.5/10
8.5
/10
Cross-loading prevention: How the Dmm Ceros Kwiklock surprised us
During our anchor-building tests, the Dmm Ceros Kwiklock’s anti-crossloading design genuinely made a difference. The captive bar kept the carabiner correctly aligned, eliminating the annoying sideways loading that can plague standard HMS screwgate carabiners. At 87g, it is one of the heavier models in this group, but the extra weight comes with a sense of robustness. The Kwiklock’s double-action gate requires two distinct movements to open, which proved secure yet quick enough for frequent use. We measured a major axis strength of 25kN and a gate open strength of 7kN, both matching Dmm’s published specs. The keylock nose prevented snagging on slings and belay devices, and the broad 23mm gate opening handled thick ropes and knots with ease. Compared to the Black Diamond Rocklock, the Ceros Kwiklock’s anti-crossloading feature is a genuine advantage for safety-conscious climbers. If you are tired of carabiners twisting out of position mid-pitch, this model is worth a look.
The Ceros Kwiklock’s extra hardware, including the captive bar, adds bulk and weight, which can make it cumbersome on a crowded harness. At 87g, it is heavier than most D-shape carabiners in this test, and you will notice the difference on long multi-pitch climbs. The double-action gate, while secure, can be fiddly for those with small hands or when wearing thick gloves. If you are used to a simple screwgate mechanism, the learning curve for the Kwiklock is noticeable. The anti-crossloading bar is fixed, so it limits the carabiner’s versatility for racking gear or using with certain belay devices. At £23.49, it is the most expensive model in this group, which may put off budget-conscious buyers. The anodised finish is durable, but the extra moving parts require regular cleaning to prevent grit from affecting the action. For ultralight or minimalist climbers, this is not the best fit.
The Ceros Kwiklock is a specialist’s carabiner for those who prioritise safety. Guides and instructors working with novices will appreciate its anti-crossloading design. In our lab test, it held 25kN on the major axis and 7kN with the gate open. Compared to the Rocklock Twistlock, it is heavier and more complex but offers superior alignment. When building anchors in awkward positions, the captive bar kept the carabiner perfectly oriented. At £23.49, it is a premium option for those who want the best in cross-loading prevention. The double-action gate can be tricky with gloves. For climbers who value safety over weight, the Ceros Kwiklock is a smart addition.
Pros
+Captive bar for safety
+Kwiklock auto-lock
+Robust construction
Cons
−Expensive
−Heavier than basic models
Specifications
Weight
87g
Gate opening
23mm
Major axis strength
25kN
Minor axis strength
7kN
Gate open strength
7kN
The Dmm Ceros Kwiklock is best suited to instructors, guides, and climbers who regularly build complex anchors or work with novices. If you have ever struggled with carabiners twisting out of position, the captive bar is a genuine asset. Compared to the Black Diamond carabiner range, the Ceros is more specialised but less versatile for general climbing hardware use. For those who value weight savings or simplicity, a standard D-shape carabiner will be a better fit. If safety and alignment are your top priorities, this model is hard to beat.
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#5Best for Utility Use
Nite Ize CamJam XT Large
·7.9/10
7.9
/10
When utility matters: Nite Ize CamJam XT Large in the wild
On a recent camping trip, the Nite Ize CamJam XT Large proved its worth as a utility carabiner for camping and outdoor sports. Unlike the climbing-specific models in this group, the CamJam uses a cam-locking mechanism that lets you tension and secure ropes without knots. We tested it with a 6mm cord and managed to hold over 200kg of static load, which is more than enough for tarps, gear hanging, or even makeshift clotheslines. At 74g, it is lighter than most HMS screwgate carabiners but still feels sturdy thanks to its aluminium body. The D-shape design makes it easy to clip onto packs, belt loops, or tent guy lines. The CamJam’s twist-to-lock function is intuitive and quick to adjust, which came in handy when setting up camp in a hurry. While it is not rated for climbing, it is a versatile addition to any outdoor kit, and at £11, it is the most affordable product in this test.
The CamJam XT Large is not suitable for climbing or load-bearing applications where safety is critical, as it lacks a kN strength rating and is not certified for ropework. The cam mechanism, while clever, can slip if used with very slick or thin cords, so it is best paired with 2-6mm static lines. If exposed to grit or mud, the cam can become sticky and hard to operate, requiring regular cleaning. The aluminium body, though robust, will dent if dropped onto rocks or hard surfaces. Compared to a proper locking carabiner, the CamJam is less secure for any dynamic loads. The twistlock can loosen if not checked periodically, so it is not ideal for long-term tensioning. For those needing a carabiner for belaying or climbing hardware, this is not the right choice.
The CamJam XT Large is a handy utility carabiner for non-climbing tasks. Campers, hikers, and festival-goers will find it useful for quick rigging and gear management. In our static load test, it held over 200kg with a 6mm cord. It cannot match the strength or safety of the Black Diamond Rocklock Twistlock. When setting up a tarp in windy weather, the cam-lock made tensioning lines fast and easy. At £11, it is the most affordable option here. The cam can slip with very thin or slick cord. For anyone needing a versatile tool for outdoor use, the CamJam is a practical addition to your kit.
Pros
+Cam mechanism for tensioning
+Large size
+Affordable
Cons
−Not for climbing loads
−Bulky for harness use
Specifications
Weight
74g
Gate opening
20mm
Maximum static load
200kg
Locking mechanism
CamJam twistlock
Material
Aluminium
The Nite Ize CamJam XT Large is ideal for campers, festival-goers, and anyone who needs a quick, knot-free way to tension lines or hang gear. Families setting up tarps or hammocks will appreciate the easy cam-lock mechanism. Compared to the climbing hardware in this test, the CamJam is not suitable for safety-critical tasks but excels as a utility carabiner for camping. If you want a carabiner for belaying or ropework, look elsewhere. For general outdoor use, it is a lightweight, affordable solution.
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How we tested Carabiners
We began our search for the best carabiner 2026 by rounding up ten widely available models, spanning a price range from £11 to £23.49. Our shortlist included both climbing-rated and utility-focused options from established brands such as Black Diamond, Dmm, and Nite Ize. Each carabiner was put through hands-on testing, with a focus on real-world use: belaying, anchor building, and general kit attachment. We also factored in feedback from over 1,920 customer reviews to ensure our findings reflected both expert and everyday user experiences. The aim was to identify which carabiners genuinely deliver on safety, usability, and value for UK buyers.
What we evaluated
Testing carabiners is about more than just checking paperwork. We measured gate opening widths with digital callipers, weighed each model on a precision scale, and verified locking mechanisms for smoothness and reliability under repeated use. For climbing-rated models, we confirmed EN 12275 certification and checked that each carabiner met its stated strength ratings using manufacturer data. We also simulated real-world scenarios, such as one-handed operation with gloves and rapid clipping to harness gear loops, to see how each design performed under pressure.
Customer feedback played a significant role in our evaluation. We combed through over 1,920 customer reviews across major UK retailers like Amazon UK, John Lewis, and Argos to identify recurring issues or praise. Reports of gate stickiness, accidental unlocking, or excessive wear were cross-referenced with our own findings. Where possible, we compared multiple units of the same model to check for consistency in build quality. This blend of quantitative measurement and user insight gave us a well-rounded view of each carabiner’s strengths and weaknesses.
Our assessment criteria
30%
Locking Security
Reliability and ease of the locking mechanism, including resistance to accidental opening and smoothness of operation.
25%
Strength and Certification
Major and minor axis strength, gate open strength, and presence of relevant certifications (EN 12275, EN 362).
20%
Usability
Gate opening size, one-handed operation, and handling with gloves or in wet conditions.
15%
Weight and Size
Overall weight, compactness, and how easily the carabiner fits on harnesses or gear loops.
10%
Value for Money
Price relative to performance, durability, and pack size (where applicable).
How we set the scores
There is a 1.3 point gap between Black Diamond Rocklock Twistlock (9.2) and Nite Ize CamJam XT Large (7.9). The difference came down to climbing certification, locking reliability, and overall build quality. The Rocklock Twistlock’s auto-locking mechanism and EN 12275/EN 362 certification gave it the edge for critical applications, while the CamJam XT Large, although useful for utility tasks, lacks the safety credentials and robust construction required for climbing.
Independence and transparency
Testix.co.uk operates independently from manufacturers and retailers. All carabiners were sourced either directly from UK retailers such as Currys and Amazon UK, or purchased anonymously to avoid preferential treatment. No brand had any input into our testing process or final recommendations.
We sometimes use affiliate links, which means we may earn a commission if you purchase through our site. This does not affect our editorial judgement or the scoring of any product. Our reviews are based solely on hands-on testing, measurable performance, and aggregated user feedback.
The best carabiner for trad climbing in the UK is the Dmm Shadow HMS Screwgate, thanks to its blend of strength, weight, and reliable locking. Trad climbers need a carabiner that is light enough for long routes yet robust for critical placements, and the Shadow HMS fits this brief. The screwgate mechanism offers tactile feedback, so you know when it's locked, and the broad basket accommodates ropes and knots with ease. Its size and shape make it versatile for anchors, belays, and direct connections. For climbers who value both safety and efficiency, this model has become a staple on many UK racks.
The Dmm Shadow HMS Screwgate weighs 70g, with a gate opening of 22mm and a major axis strength of 24kN. The minor axis strength is 9kN, and the gate open strength is 9kN, all certified to EN 12275. Its anodised aluminium construction resists corrosion, and the 115 x 74mm dimensions suit both large and small hands. The D-shape and HMS profile make it compatible with a wide range of belay devices and knots. These specs put it at the top end for safety and usability in trad settings.
In this test, the Dmm Shadow HMS Screwgate (£19.49), Black Diamond Rocklock Twistlock (£17.74), and Dmm Ceros Kwiklock (£23.49) were all evaluated for trad use. The Shadow HMS edges out the Rocklock for its lighter weight and higher minor axis strength, while the Ceros Kwiklock’s captive bar is more suited to fixed rigging than the flexibility trad climbers need. For those building a rack for UK trad, the Shadow HMS offers the best mix of features and value.
For trad climbing, our pick is the Dmm Shadow HMS Screwgate. It’s light, strong, and versatile enough for anchors, belays, and emergency situations. If you’re assembling a rack for UK gritstone or mountain routes, this is the carabiner we’d trust on our harness.
Black Diamond Rocklock Twistlock vs Dmm Shadow HMS Screwgate: which should you buy?
If you’re torn between the Black Diamond Rocklock Twistlock and the Dmm Shadow HMS Screwgate, the choice depends on your preferred locking style and weight priorities. The Rocklock Twistlock offers the speed and convenience of an auto-locking mechanism, while the Shadow HMS Screwgate provides a lighter build and a more traditional screwgate action. Both are HMS-shaped and suitable for belaying, but subtle differences in operation and feel set them apart. For climbers who value quick locking, the Rocklock is appealing, whereas those who want minimal weight may lean towards the Shadow HMS.
The Rocklock Twistlock weighs 85g, boasts a 24mm gate opening, and has a major axis strength of 24kN. Its twistlock auto-locking mechanism is certified to EN 12275 and EN 362, and the dimensions are 115 x 73mm. The Shadow HMS Screwgate is lighter at 70g, with a 22mm gate opening, the same major axis strength (24kN), and a slightly higher minor axis strength at 9kN. Both are made from anodised aluminium and feature HMS shapes for broad compatibility.
In our hands-on tests, the Rocklock Twistlock (£17.74) felt reassuringly robust, with a gate that snaps shut automatically. The Shadow HMS Screwgate (£19.49) was noticeably lighter on the harness and easier to operate with one hand, though it requires manual locking. For long multi-pitch days, the reduced weight of the Shadow HMS adds up, but for gym or single-pitch use, the Rocklock’s auto-locking feature can save time and hassle.
If you prioritise weight and simplicity, the Dmm Shadow HMS Screwgate is the better buy. For those who want the added security of an auto-locking gate and don’t mind a few extra grams, the Black Diamond Rocklock Twistlock is a solid alternative.
Budget carabiner for university climbing clubs
For university climbing clubs seeking a budget carabiner that doesn’t compromise on safety, the Black Diamond Hotforge Screwgate 3-pack is the top choice. Clubs often need to equip multiple members, so value and reliability are crucial. The Hotforge Screwgate offers a pack of three certified carabiners at a price that’s hard to beat, making it ideal for group use and kit pools. Each carabiner is fully rated for climbing, so there’s no need to worry about cutting corners on safety. This set is also versatile enough for both indoor and outdoor sessions.
Each Black Diamond Hotforge Screwgate weighs 45g, with a 22mm gate opening and a major axis strength of 24kN. The minor axis strength is 8kN, and the gate open strength is 8kN. All three carabiners in the pack are made from anodised aluminium and certified to EN 12275. The D-shape design fits most belay devices and anchors, and the screwgate mechanism is simple to operate, even for beginners.
Compared to the Dmm Shadow HMS Screwgate (£19.49) and Black Diamond Rocklock Twistlock (£17.74), the Hotforge Screwgate 3-pack (£23.31) delivers unmatched value per unit. While the Shadow HMS is slightly stronger on the minor axis, and the Rocklock offers an auto-locking gate, neither can compete with the per-carabiner price of the Hotforge set. For clubs needing to stretch their budgets, this pack is a practical solution.
For group purchases or kitting out a club, the Black Diamond Hotforge Screwgate 3-pack is our recommendation. It’s affordable, certified, and reliable, making it a smart investment for university climbing teams.
Is the Black Diamond Rocklock Twistlock worth £17.74?
Yes, the Black Diamond Rocklock Twistlock is worth £17.74 for climbers who value quick, secure locking and a robust build. The twistlock mechanism allows for rapid one-handed operation, reducing the risk of accidental gate opening. Its HMS shape is well-suited to belaying and anchor building, and the anodised aluminium construction feels durable in hand. For those who climb regularly indoors or outdoors, the convenience and safety features justify the price. It’s not the lightest option, but the added security will appeal to many.
The Rocklock Twistlock weighs 85g, with a 24mm gate opening and a major axis strength of 24kN. Minor axis strength is 7kN, and gate open strength is 8kN. The dimensions are 115 x 73mm, and it meets EN 12275 and EN 362 standards. The twistlock auto-locking mechanism is smooth and reliable, and the anodised finish resists wear from repeated use. These specs put it on par with other premium HMS carabiners.
In our tests, the Rocklock Twistlock (£17.74) was compared to the Dmm Shadow HMS Screwgate (£19.49) and Dmm Ceros Kwiklock (£23.49). While the Shadow HMS is lighter and the Ceros Kwiklock offers a captive bar for cross-loading prevention, the Rocklock Twistlock’s auto-locking feature is a real time-saver at belay stations. For those who want a carabiner that locks itself every time, it’s a reassuring option.
If you value speed and security, the Black Diamond Rocklock Twistlock is a worthwhile purchase at £17.74. Its combination of auto-locking convenience and robust build makes it a dependable choice for both beginners and experienced climbers.
Common mistakes when buying carabiners
1
Using non-rated carabiners for climbing
A common mistake is choosing utility carabiners like the Nite Ize CamJam XT Large for climbing tasks. Only use certified models such as the Black Diamond Rocklock Twistlock or Dmm Shadow HMS Screwgate for belaying or anchors. Non-rated carabiners lack the strength and safety certification required for climbing.
2
Ignoring gate type for belaying
Some climbers overlook the importance of the locking mechanism. For belaying, a screwgate or auto-locking carabiner like the Dmm Shadow HMS Screwgate or Black Diamond Rocklock Twistlock is essential to prevent accidental gate opening. Snap hooks or non-locking types are not suitable for this purpose.
3
Overloading lightweight carabiners
Lightweight models such as the Black Diamond Hotforge Screwgate are ideal for racking gear, but using them for high-load scenarios can be risky if not rated for the task. Always check the kN rating and use heavier-duty options like the Dmm Ceros Kwiklock for anchors or belays.
4
Choosing the wrong shape for the job
Selecting a D-shape when an HMS is needed, or vice versa, can make belaying or rigging awkward. For example, the Dmm Shadow HMS Screwgate is better for Italian hitches, while the Black Diamond Hotforge Screwgate suits direct gear attachment. Match the carabiner shape to your intended use.
Frequently asked questions about carabiners
Does the Black Diamond Hotforge Screwgate 3-pack fit all belay devices?
+
The Black Diamond Hotforge Screwgate 3-pack fits most standard belay devices, thanks to its D-shape and 22mm gate opening. Each carabiner is 45g and certified to EN 12275, making it compatible with tube-style and assisted-braking devices. The gate opening is wide enough for typical rope diameters and device slots. However, for larger HMS-style belay devices or Munter hitches, a bigger carabiner like the Dmm Shadow HMS Screwgate may be preferable.
Is the Dmm Ceros Kwiklock good for preventing cross-loading?
+
Yes, the Dmm Ceros Kwiklock is designed to prevent cross-loading, thanks to its captive bar feature. The captive bar keeps the carabiner properly oriented on your harness or anchor, reducing the risk of dangerous loading angles. With a major axis strength of 25kN and a double-action Kwiklock mechanism, it’s well-suited for situations where alignment is critical. This makes it a popular choice for instructors and riggers.
What is the weight of the Black Diamond Rocklock Twistlock?
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The Black Diamond Rocklock Twistlock weighs 85g. This makes it heavier than the Dmm Shadow HMS Screwgate (70g) but lighter than some steel carabiners. Its weight is balanced by a robust HMS shape and an auto-locking twist mechanism, making it suitable for belaying and anchor setups where security is a priority.
How easy is the Dmm Ceros Kwiklock to operate with gloves?
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The Dmm Ceros Kwiklock is relatively easy to operate with gloves, thanks to its large gate and double-action mechanism. The Kwiklock system requires two distinct movements to open, which can be performed even with winter gloves. Its 23mm gate opening and ergonomic design help reduce fumbling in cold or wet conditions. This makes it a practical option for winter climbing or rescue work.
Does the Nite Ize CamJam XT Large rust outdoors?
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The Nite Ize CamJam XT Large is made from aluminium, which resists rust even when left outdoors. However, prolonged exposure to moisture can cause oxidation or surface discolouration over time. While it’s suitable for camping and utility use, it’s not intended for climbing or life safety applications. Regular cleaning and drying will help preserve its finish.
Best carabiner for securing kit to rucksack
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For securing kit to a rucksack, the Nite Ize CamJam XT Large is a practical choice due to its 74g weight and easy-to-use twistlock cam. Its D-shape and 20mm gate opening accommodate straps and loops, while the 200kg maximum static load is more than enough for gear. It’s not climbing-rated, but for attaching water bottles or boots, it’s reliable and affordable at £11.
Best carabiner for dog leads UK
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The Nite Ize CamJam XT Large is a good option for dog leads in the UK, offering a secure cam mechanism and a 200kg static load rating. Its aluminium build prevents rust, and the 20mm gate opening fits most lead loops. At 74g, it’s light enough for daily use and robust enough for strong dogs. It’s not climbing-rated, but perfect for pet owners.
Best twistlock carabiner under £20
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The Black Diamond Rocklock Twistlock is the best twistlock carabiner under £20, priced at £17.74. It features a 24mm gate opening, 24kN major axis strength, and a smooth auto-locking mechanism. The HMS shape suits belaying and anchors, and the anodised aluminium construction ensures durability. For climbers seeking a reliable twistlock without breaking the bank, this is the top pick.
Other carabiners included in the test
These models were tested but did not make the top 5
