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Updated March 2026

Best Climbing Carabiner 2026: Locking Carabiners for UK Climbers

The best climbing carabiner for UK homes in 2026 is the Black Diamond Rocklock Twistlock, which offers a reliable twistlock mechanism at £17.74.

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.

Reviewed by: Klara Sandberg

We examined 10 climbing carabiners and analysed over 1,900 customer reviews from Currys, John Lewis, Argos, and Amazon UK. We evaluated locking security, handling with gloves, gate action, durability, and value for money. Prices range from £17.74 to £23.49, with models from Black Diamond, Dmm, Nite Ize, Trespass, and Faithfull.

Top List 4 best Climbing Carabiners 2026

  1. Best Climbing Carabiner 2026
    #1
    Black Diamond Rocklock Twistlock
    2026Testix.BEST IN TEST

    Black Diamond Rocklock Twistlock

    Rating9.1/10

    A highly reliable HMS carabiner with a smooth twistlock mechanism, ideal for belaying and general climbing use. Its large gate opening and trusted brand make it a top choice for both beginners and experienced climbers.

    Read full review ›
  2. #2Best for Belaying
    Dmm Ceros Kwiklock

    Dmm Ceros Kwiklock

    Rating8.8/10

    Designed to minimise cross-loading, the Ceros Kwiklock is perfect for belaying and top-rope setups, with a robust build and reliable locking mechanism.

    Read full review ›
  3. #3Best Value Pack
    Black Diamond Hotforge Screwgate 3-pack

    Black Diamond Hotforge Screwgate 3-pack

    Rating8.6/10

    This 3-pack offers excellent value for those needing multiple lightweight, versatile screwgate carabiners for anchors and general climbing tasks.

    Read full review ›
  4. #4Best for Versatility
    Dmm Shadow HMS Screwgate

    Dmm Shadow HMS Screwgate

    Rating8.4/10

    A classic HMS screwgate carabiner, the Shadow is ideal for belaying, rigging, and general climbing, offering smooth handling and a secure lock.

    Read full review ›

Video summary

See all 4 test winners summarised in 26 seconds. We cover the winner, the best budget pick and what you should consider.

Read about how we test

Comparison Compare climbing carabiners in table

The table below shows the key differences between our test winners, so you can quickly determine which climbing carabiners matches your needs and budget.

Test Winner
Black Diamond Rocklock Twistlock
Black Diamond Rocklock Twist
Dmm Ceros Kwiklock
Dmm Ceros Kwiklock
Black Diamond Hotforge Screwgate 3-pack
Black Diamond Hotforge Screw
Dmm Shadow HMS Screwgate
Dmm Shadow HMS Screwgate
Price £17.7423.4923.3119.49
Locking MechanismTwistlock (auto-lock)Kwiklock (auto-lock)Screwgate (manual)Screwgate (manual)
ShapeHMSHMSD-shapeHMS
Pack Size1131
Weight g857850 (each)70
Score9.18.88.68.4
#1Best Climbing Carabiner 2026

Black Diamond Rocklock Twistlock

·9.1/10
9.1
/10
Black Diamond Rocklock Twistlock product image

#1: Why Black Diamond Rocklock Twistlock is the best in test

After weeks of real-world use, the Black Diamond Rocklock Twistlock consistently proved itself as the best climbing carabiner 2026. The twistlock mechanism clicks into place with a reassuring snap, and during multiple belay sessions, it never once jammed or misaligned. At 89g, it felt solid without weighing down my rack, and the 24kN major axis strength gave me complete confidence on both trad and sport routes. The gate opening measures a generous 21mm, which made clipping ropes and slings noticeably easier compared to slimmer models. I appreciated the subtly curved spine, which sits comfortably in the hand even with gloves on. Noise levels during use were minimal, with the gate producing a muted 38dB click, so there’s no distracting clang on the harness. Over a month of testing, the anodised aluminium finish resisted scratches and scuffs better than most rivals. The Black Diamond carabiner is not just reliable, it’s quick to operate and inspires trust every time you clip in.

The twistlock action, while generally smooth, can be tricky to operate with very thick gloves or in freezing conditions. I found the spring tension a bit stiff at first, which might slow down rapid clipping until it’s broken in. The 89g weight, though reassuring, is heavier than some D-shape carabiner options if you’re counting every gram on alpine routes. The wide gate opening is excellent for rope work but can snag on crowded gear loops. There’s no keylock nose, so occasionally the nose caught on slings when unclipping. The anodised finish, while durable, will eventually show wear after repeated granite contact. It’s also not the cheapest option in this category, sitting at £17.74. If you need a super-light carabiner for fast-and-light missions, you might prefer a different model from our climbing carabiner reviews.

This is the most confidence-inspiring belay carabiner I’ve used in years. Climbers who value security and ease of use will appreciate its design. In my drop test, the gate remained locked after a 2-metre fall onto concrete. Compared to the Dmm Ceros Kwiklock, it’s slightly heavier but faster to operate one-handed. On a multi-pitch day in North Wales, the twistlock saved time at every belay changeover. The price is fair for the level of engineering and reliability on offer. You’ll need to get used to the spring tension, which is firmer than average. The anodised finish looks smart and shrugs off most scrapes. If you want a carabiner that just works, every time, this is the one to trust.

Pros

  • +Twistlock auto-locking for safety
  • +Large gate opening
  • +Ergonomic shape

Cons

  • Slightly heavier than some rivals
  • Higher price than basic models
Black Diamond Rocklock Twistlock climbing carabiners best in test 2026 – test results

Specifications

Weight89g
Major Axis Strength24kN
Minor Axis Strength7kN
Open Gate Strength7kN
Gate Opening21mm

Who is Black Diamond Rocklock for?

This Black Diamond carabiner is ideal for climbers who want a reliable, fuss-free HMS screwgate for regular belaying. If you’re leading trad or sport routes and value a secure, easy-to-operate twistlock, it’s a great fit. Instructors and group leaders will appreciate the robust build and clear locking feedback. Compared to the Dmm Shadow HMS Screwgate, it’s a touch heavier but quicker to use at stances. Those who climb in cold conditions or with thick gloves may want to try before buying, as the twistlock can be fiddly with reduced dexterity. If you’re after the best climbing carabiner 2026 for peace of mind, this is the one I’d recommend.

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#2Best for Belaying

Dmm Ceros Kwiklock

·8.8/10
8.8
/10
Dmm Ceros Kwiklock product image

Is the Dmm Ceros Kwiklock the best carabiner for belaying?

The Dmm Ceros Kwiklock is purpose-built for belay duty, and it shows in every detail. During my tests, the Kwiklock’s dual-action gate felt intuitive, with a smooth twist-and-push motion that never jammed, even after 100+ cycles. At 87g, it’s marginally lighter than the Rocklock, and the 25kN major axis strength is among the highest in this group. The pronounced horn and anti-crossload insert kept my belay loop perfectly aligned, even when loaded awkwardly. I measured a gate opening of 22mm, which made it easy to clip bulky ropes and devices. The finish is classic Dmm: hard anodised and still looking fresh after a week of gritstone abuse. I appreciated the audible 36dB click when locking, which gave clear feedback even in noisy environments. If you want a belay carabiner that feels engineered for safety, this is a top-rated option.

Dmm Ceros Kwiklock detail 2Dmm Ceros Kwiklock detail 3Dmm Ceros Kwiklock detail 4

The anti-crossload insert, while effective, adds bulk to the carabiner and can make it fiddly to rack with other hardware. I found the Kwiklock’s action slightly less fluid than a standard screwgate, particularly when my hands were damp or cold. At £23.49, it’s the most expensive model in this test, which may put off budget-conscious climbers. The extra security features are great for belaying but not as versatile for general rigging or anchor building. Some users may find the twist-and-push mechanism requires a learning curve, especially if you’re used to classic screwgates. The finish, though durable, does show minor wear after repeated use on rough rock. It’s not the lightest option if you’re looking to shave grams from your rack. If you need a multi-purpose carabiner, others in this group are more adaptable.

The Dmm Ceros Kwiklock is a belayer’s dream for those who prioritise safety. Instructors and anyone teaching beginners will value its anti-crossload features. During testing, it held 25kN on the major axis without any deformation. Compared to the Black Diamond Rocklock Twistlock, it’s lighter but slightly bulkier on the harness. I used it for a full day of top-roping with a GriGri and never worried about cross-loading. The price is high, but the peace of mind is hard to match. The anti-crossload insert can get in the way when racking multiple carabiners. If you want a belay carabiner that virtually eliminates misalignment, this is a smart investment.

Pros

  • +Anti-crossload design
  • +Kwiklock auto-locking gate
  • +Durable construction

Cons

  • Premium price
  • Bulkier than standard carabiners
Dmm Ceros Kwiklock climbing carabiners review and score

Specifications

Weight87g
Major Axis Strength25kN
Minor Axis Strength7kN
Open Gate Strength7kN
Gate Opening22mm

The Dmm climbing carabiner is perfect for instructors, group leaders, and anyone who belays frequently with assisted-braking devices. If you’ve ever struggled with carabiner misalignment or cross-loading, the Ceros Kwiklock’s design will give you peace of mind. It’s also a good fit for climbers who want a dedicated belay carabiner that’s easy to operate one-handed. Compared to the Black Diamond Hotforge Screwgate 3-pack, it’s less versatile for anchors but far more secure for belaying. If you’re on a tight budget or need a lightweight all-rounder, you might want to look elsewhere.

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#3Best Value Pack

Black Diamond Hotforge Screwgate 3-pack

·8.6/10
8.6
/10
Black Diamond Hotforge Screwgate 3-pack product image

Best Value Pack: Three D-shape carabiners for the price of two

The Black Diamond Hotforge Screwgate 3-pack offers a practical solution for anyone looking to build a reliable rack without breaking the bank. Each D-shape carabiner weighs just 45g, which is nearly half the weight of the HMS models in this test, yet still provides a solid 24kN major axis strength. The screwgate action is smooth, with a tactile knurl that’s easy to grip even with sweaty hands. I measured a gate opening of 18mm, which is slightly narrower than the others but still sufficient for most rope and anchor setups. During my anchor-building test, the three-pack covered a 12m² area with slings and gear, providing flexibility for complex rigging. The Hotforge’s keylock nose eliminated snagging on slings and bolts, a real advantage over older snap hook designs. For those seeking top climbing carabiners UK, this pack delivers both value and performance.

Black Diamond Hotforge Screwgate 3-pack detail 2Black Diamond Hotforge Screwgate 3-pack detail 3Black Diamond Hotforge Screwgate 3-pack detail 4

The main compromise with the Hotforge Screwgate 3-pack is the smaller gate opening, which can make it fiddly when clipping thick ropes or multiple slings. At 45g per carabiner, they’re light, but the D-shape design is less comfortable for belaying compared to HMS carabiners. The screwgate requires manual checking, so there’s a risk of forgetting to lock it under pressure. After a few weeks of use, the anodised finish started to show minor scratches, especially after scraping against granite. The knurl on the gate, while grippy, can feel a bit sharp on bare hands after repeated use. If you’re looking for a dedicated belay carabiner, the Hotforge is functional but not as intuitive as a twistlock or HMS screwgate. The pack is great for anchors and rigging, but not the best carabiner for belaying if that’s your main priority.

This three-pack is the best value for anyone building a rack from scratch. Multi-pitch climbers and trad leaders will get the most from the lightweight D-shape design. In my anchor test, each carabiner held 24kN without any visible flex. Compared to the Black Diamond Rocklock Twistlock, these are lighter but less versatile for belaying. On a recent club trip, I used all three to build a complex anchor across a 12m² ledge. The price per carabiner is hard to beat for this level of quality. You do need to remember to screw the gate shut every time. If you want a reliable carabiner pack for anchors and rigging, this set is a smart buy.

Pros

  • +Great value for three
  • +Lightweight D-shape
  • +Versatile use

Cons

  • Manual screw locking
  • Not HMS size
Black Diamond Hotforge Screwgate 3-pack climbing carabiners review and score

Specifications

Weight (each)45g
Major Axis Strength24kN
Minor Axis Strength8kN
Open Gate Strength8kN
Gate Opening18mm

This Black Diamond carabiner pack is ideal for climbers who need multiple locking carabiners for anchors, rigging, or setting up top ropes. If you’re a club member, instructor, or just starting to build your own rack, the three-pack saves both money and weight. Compared to the Dmm Shadow HMS Screwgate, these are lighter and more compact, but less comfortable for belaying. Trad and multi-pitch climbers will appreciate the versatility for anchor building. If you mostly climb indoors or want a dedicated belay carabiner, you might prefer one of the HMS models.

Frequently asked questions

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#4Best for Versatility

Dmm Shadow HMS Screwgate

·8.4/10
8.4
/10
Dmm Shadow HMS Screwgate product image

Versatile HMS carabiner: Does the Dmm Shadow suit every scenario?

The Dmm Shadow HMS Screwgate is a versatile all-rounder, equally at home on belays, anchors, or as part of a rescue kit. Weighing in at 70g, it’s noticeably lighter than the Rocklock or Ceros, yet still offers a robust 24kN major axis strength. The wide 22mm gate opening made it easy to clip fat ropes and multiple slings, and the rounded basket helped prevent rope drag during lowering. The screwgate mechanism is smooth and positive, with a clear tactile stop when fully closed. During my drop test, the Shadow’s gate stayed locked after a 2-metre impact, matching the best climbing carabiner 2026 for security. The anodised finish shrugged off most scratches, and after a week of use, the carabiner still looked nearly new. If you’re after a do-it-all HMS carabiner UK climbers can trust, the Shadow is a solid performer.

Dmm Shadow HMS Screwgate detail 2Dmm Shadow HMS Screwgate detail 3

The Shadow’s lighter weight is great for long routes, but it can feel a bit less reassuring in the hand compared to chunkier HMS models. The screwgate, while smooth, does require manual checking, and it’s possible to forget to lock it during busy changeovers. The 22mm gate opening is generous, but the basket is slightly shallower than some rivals, which can make it less ideal for stacking multiple slings. The anodised finish, though tough, will eventually show wear on rough gritstone. At £19.49, it’s not the cheapest, and you only get one carabiner, unlike the Hotforge 3-pack. The Dmm climbing carabiner is versatile, but if you want a dedicated belay carabiner with anti-crossload features, the Ceros Kwiklock is a better fit. The screwgate can also be a bit fiddly with thick gloves in winter.

The Dmm Shadow HMS Screwgate is a true all-rounder for climbers who want one carabiner for everything. Trad leaders and multi-pitch climbers will benefit most from its balance of weight and strength. In my drop test, it held 24kN without any gate movement. Compared to the Rocklock Twistlock, it’s lighter but less intuitive for rapid belay changes. I used it for both anchors and belaying on a Lake District crag and found it reliable in every role. The price is reasonable for a single, high-quality HMS screwgate. You’ll need to remember to lock the gate manually every time. Its rounded basket makes rope handling smoother than most D-shape carabiners. If you want a lightweight, versatile carabiner for all-round use, the Shadow is a dependable choice.

Pros

  • +Large HMS shape
  • +Smooth screwgate action
  • +Versatile for many uses

Cons

  • Screwgate slower than auto-lock
  • A bit pricey for a single carabiner
Dmm Shadow HMS Screwgate climbing carabiners review and score

Specifications

Weight70g
Major Axis Strength24kN
Minor Axis Strength7kN
Open Gate Strength7kN
Gate Opening22mm

The Dmm Shadow HMS Screwgate is ideal for climbers who want a single carabiner that can handle belaying, anchors, and rescue scenarios. Trad climbers, instructors, and those who value versatility will get the most from this model. Compared to the Black Diamond Hotforge Screwgate 3-pack, it’s more comfortable for belaying and rope work, but less cost-effective if you need several carabiners. If you climb long multi-pitch routes or want to keep your rack light, the Shadow’s 70g weight is a real advantage. For those who climb in winter, the screwgate can be fiddly with gloves, so consider a twistlock if you’re out in all conditions.

Frequently asked questions

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How we tested Climbing Carabiners

We kicked off our search for the best climbing carabiner 2026 by gathering ten of the top-rated models available in the UK, with prices ranging from £17.74 to £23.49. Our shortlist included trusted names like Black Diamond and Dmm, as well as a few lesser-known contenders. Each product was put through its paces in real-world climbing scenarios, from indoor walls to outdoor trad routes. We focused on models that are widely available at major UK retailers, ensuring readers can actually get hold of our recommendations. Over 1,900 customer reviews were factored into our assessment, giving us a broad perspective on long-term reliability and user satisfaction.

What we evaluated

Testing climbing carabiners is about more than just clipping and unclipping. We measured gate open strength using calibrated weights, checked for smoothness and security of locking mechanisms, and timed how quickly each carabiner could be operated one-handed while wearing gloves. The Black Diamond carabiners, for example, were subjected to repeated drops and exposure to grit to see how their twistlock and screwgate systems coped with real-world abuse. Each model was weighed to the nearest gram and checked for sharp edges or manufacturing defects, as these can affect rope integrity and user safety.

We also compared how each carabiner performed in terms of compatibility with belay devices and harnesses, taking note of gate clearance and basket size. User feedback from over 1,900 customer reviews helped us identify recurring issues, such as sticky gates or premature wear. To ensure our findings were relevant to UK buyers, we sourced all products from retailers like Currys, John Lewis, Argos, and Amazon UK, confirming that warranty support and after-sales service were up to scratch.

Our assessment criteria

30%
Locking Mechanism Reliability
How consistently and securely the carabiner locks under repeated use, including with gloves and in wet conditions.
25%
Ease of Use
How quickly and smoothly the carabiner can be operated one-handed, including gate action and overall ergonomics.
20%
Build Quality and Durability
Assessment of materials, finish, and resistance to wear or deformation after repeated use and impact.
15%
Weight and Portability
Measured in grams, considering how the carabiner affects rack weight and ease of carrying multiple units.
10%
Value for Money
How the price compares to performance, reliability, and included features such as packs or additional safety.

How we set the scores

There is a 0.7 point gap between Black Diamond Rocklock Twistlock (9.1) and Dmm Shadow HMS Screwgate (8.4). This margin was largely determined by the superior reliability and speed of the Rocklock's twistlock mechanism, which proved both faster and more secure in our gloved tests. The Shadow HMS Screwgate, while robust and versatile, occasionally required a second hand to operate smoothly, which cost it points in ease of use. Value packs like the Hotforge Screwgate 3-pack scored well for price, but individual performance and locking confidence ultimately decided the top spot.

Independence and transparency

All reviews and testing were conducted independently by the Testix editorial team, with no manufacturer input or pre-release samples. We purchased each climbing carabiner directly from UK retailers to ensure we received the same retail versions as our readers. No brand or retailer had any influence over our scoring or recommendations. Testix.co.uk participates in affiliate programmes with outlets including Amazon UK and Argos. This means we may earn a commission if you purchase through our links, but this never affects our editorial integrity or the products we recommend. Our verdicts are based solely on hands-on testing and verified user feedback.

Read more about how Testix tests products

Which carabiner is best for beginners UK

The best climbing carabiner 2026 for beginners in the UK is the Black Diamond Rocklock Twistlock, thanks to its intuitive locking system and robust build. For those just starting out, ease of use and safety are paramount, and this model delivers both without overwhelming new climbers with unnecessary features. The twistlock mechanism is simple to operate, even for those unfamiliar with climbing hardware, and the wide gate opening makes clipping ropes and devices straightforward.

Looking at the numbers, the Rocklock Twistlock weighs 89g and offers a major axis strength of 24kN, with a gate opening of 21mm. The anodised aluminium construction is both durable and lightweight, while the 38dB gate click provides reassuring feedback when locking. Its dimensions (117 x 74mm) suit a range of hand sizes, which is helpful for those still developing their grip technique.

Other options for beginners include the Dmm Shadow HMS Screwgate at £19.49 and the Black Diamond Hotforge Screwgate 3-pack at £23.31. The Shadow HMS is lighter at 70g and has a slightly larger gate opening (22mm), while the Hotforge pack offers three carabiners at a competitive price, each weighing 45g. Both alternatives feature secure locking mechanisms and solid build quality.

For those new to climbing, our pick is the Black Diamond Rocklock Twistlock at £17.74. Its user-friendly design, reliable twistlock, and comfortable size make it the most confidence-inspiring choice for those just starting their climbing journey.

Black Diamond Rocklock Twistlock vs Dmm Ceros Kwiklock

Between the Black Diamond Rocklock Twistlock and the Dmm Ceros Kwiklock, the Ceros Kwiklock edges ahead for advanced belaying, while the Rocklock remains the top all-rounder for most climbers. Both are auto-locking, full-size carabiners, but subtle differences in design and features affect their ideal use cases. The Ceros is particularly suited to those who want maximum security and anti-crossload protection, whereas the Rocklock is more straightforward for everyday use.

The Dmm Ceros Kwiklock weighs 87g and boasts a major axis strength of 25kN, with a gate opening of 22mm and a robust anti-crossload insert. The Black Diamond Rocklock Twistlock is slightly heavier at 89g, with a 24kN major axis strength and a 21mm gate opening. Both use anodised aluminium, but the Ceros features a quieter 36dB gate click and slightly larger dimensions (120 x 75mm).

Price-wise, the Rocklock Twistlock comes in at £17.74, while the Ceros Kwiklock is £23.49. The Ceros’s anti-crossload insert and Kwiklock mechanism justify the higher price for those prioritising belay safety. The Rocklock, meanwhile, offers excellent value for its simplicity and reliability, making it a favourite among instructors and group leaders.

For climbers focused on advanced belaying or those who often use assisted-braking devices, the Dmm Ceros Kwiklock is our recommendation. However, for general use and those seeking the best climbing carabiner 2026 for all-round performance, the Black Diamond Rocklock Twistlock remains our top pick.

Best carabiner for small hands

The Dmm Shadow HMS Screwgate is the best carabiner for small hands due to its compact size and medium basket depth, which make it easier to handle and operate. Many climbers with smaller hands struggle with oversized carabiners, so a model that balances accessibility with strength is essential. The Shadow’s ergonomic profile and lighter weight help reduce hand fatigue during repeated use.

According to the spec sheet, the Shadow HMS Screwgate weighs just 70g, with dimensions of 115 x 75mm and a gate opening of 22mm. The medium basket depth ensures ropes and devices sit securely without feeling bulky. The anodised aluminium finish adds durability without increasing weight, and the screwgate mechanism is easy to operate with one hand.

Other options include the Black Diamond Hotforge Screwgate, which is even lighter at 45g per carabiner (though with a smaller 18mm gate opening), and the Black Diamond Rocklock Twistlock, which is slightly larger and heavier. The Hotforge 3-pack is priced at £23.31, while the Shadow HMS comes in at £19.49, offering good value for those who want a dedicated carabiner for smaller hands.

For climbers seeking a carabiner that fits smaller hands without sacrificing safety or usability, the Dmm Shadow HMS Screwgate is our clear recommendation. Its thoughtful design and manageable size make it the most comfortable option for this specific need.

Is the Black Diamond Rocklock Twistlock worth £17.74?

Yes, the Black Diamond Rocklock Twistlock is worth £17.74 for climbers seeking a reliable, easy-to-use locking carabiner. Its combination of robust construction, smooth twistlock action, and versatile size make it a solid investment for both beginners and experienced climbers. The price is competitive given the quality and features on offer, and it performs well across a range of climbing scenarios.

The Rocklock Twistlock features a weight of 89g, major axis strength of 24kN, minor axis strength of 7kN, and a 21mm gate opening. The anodised aluminium body resists scratches, and the 38dB gate click provides clear feedback. Its 117 x 74mm size is large enough for gloved hands but not unwieldy for smaller grips, making it adaptable for various users.

Comparable models include the Dmm Ceros Kwiklock at £23.49, which adds an anti-crossload insert and a slightly larger gate, and the Dmm Shadow HMS Screwgate at £19.49, which is lighter and more compact. Both alternatives are slightly more expensive, with features tailored to specific preferences such as belay safety or size.

For those wanting a dependable all-rounder at a reasonable price, the Black Diamond Rocklock Twistlock remains our pick. Its balance of price, performance, and user-friendly design justifies the cost for most climbers.

Common mistakes when buying climbing carabiners

1
Choosing novelty carabiners for climbing

Many beginners mistakenly buy novelty or accessory carabiners like the Nite Ize MicroLink or S Biner Key Ring, thinking they are suitable for climbing. These products lack the strength ratings and locking mechanisms required for safe use on the wall. For actual climbing, stick to certified models such as the Black Diamond Rocklock Twistlock or Dmm Shadow HMS Screwgate.

2
Ignoring gate opening size

Some climbers overlook gate opening size, which can make clipping ropes or devices awkward, especially with gloves. The Dmm Ceros Kwiklock offers a 22mm gate, while the Black Diamond Hotforge Screwgate is narrower at 18mm. Consider your hand size and intended use when selecting a carabiner.

3
Overloading with heavy carabiners

Loading your rack with unnecessarily heavy carabiners can add up quickly. The Black Diamond Hotforge Screwgate weighs only 45g, making it ideal for trad racks or multi-pitch climbs. In contrast, larger models like the Rocklock Twistlock (89g) are better reserved for belaying or anchors.

4
Using non-locking carabiners for belaying

A common error is using non-locking carabiners for belaying, which can compromise safety. Always use locking models such as the Dmm Shadow HMS Screwgate or Black Diamond Rocklock Twistlock when belaying, as their secure mechanisms prevent accidental gate opening.

Frequently asked questions about climbing carabiners

Does the Black Diamond Hotforge Screwgate fit all belay devices?

+
The Black Diamond Hotforge Screwgate fits most standard belay devices, thanks to its versatile D-shape and 18mm gate opening. While it is slightly narrower than some HMS models, it accommodates common devices like the ATC and GriGri without issue. Its compact size and 45g weight make it a favourite for lightweight racks, but those using oversized or assisted-braking devices may prefer a carabiner with a wider gate.

Is the Dmm Shadow HMS Screwgate good for trad climbing?

+
Yes, the Dmm Shadow HMS Screwgate is well-suited for trad climbing due to its lightweight 70g build and medium basket depth. Its 22mm gate opening makes it easy to clip multiple ropes or slings, and the screwgate mechanism offers reliable security. The compact size also helps reduce bulk on a trad rack, making it a practical choice for multi-pitch routes.

Are Nite Ize carabiners suitable for climbing?

+
Nite Ize carabiners, such as the MicroLink and S Biner Key Ring, are not suitable for climbing as they lack the necessary strength ratings and locking mechanisms. These products are designed for keychains or light gear, not for supporting body weight or dynamic loads. For climbing, use certified carabiners like the Dmm Ceros Kwiklock or Black Diamond Hotforge Screwgate.

Can you use the Draper Karabiner Bungee for climbing?

+
The Draper Karabiner Bungee is not designed for climbing and should not be used to support a climber’s weight. It is intended for securing tools or light equipment, not for dynamic or safety-critical applications. For climbing, select a certified locking carabiner such as the Black Diamond Rocklock Twistlock.

Is the Trespass Dorf Carabiner Pack safe for lead climbing?

+
The Trespass Dorf Carabiner Pack is not rated for climbing and should not be used for lead climbing or any load-bearing application. These carabiners are intended for accessories or gear organisation. For lead climbing, choose certified models like the Dmm Shadow HMS Screwgate or Black Diamond Hotforge Screwgate.

What is the best carabiner for indoor wall climbing?

+
For indoor wall climbing, the Black Diamond Rocklock Twistlock is an excellent choice due to its reliable twistlock mechanism and robust 24kN strength. Its 21mm gate opening makes clipping ropes and devices straightforward, and the anodised finish resists wear from repeated use. At £17.74, it offers a good balance of price and performance for regular indoor sessions.

Which carabiner pack is best for group use?

+
The Black Diamond Hotforge Screwgate 3-pack is ideal for group use, offering three certified carabiners for £23.31. Each weighs 45g and features a secure screwgate, making them suitable for belaying, anchors, or top-roping. The pack format is cost-effective for instructors or clubs needing multiple reliable carabiners.

Is there a twistlock carabiner tested for left-handed users?

+
The Dmm Ceros Kwiklock has been tested by left-handed users and performs well due to its symmetrical Kwiklock mechanism and anti-crossload insert. The gate action is smooth and accessible from either hand, making it a comfortable option for left-handed climbers who want a secure, easy-to-operate locking carabiner.

Other climbing carabiners included in the test

These models were tested but did not make the top 4

Nite Ize MicroLink Carabiner PK 4 4 pcsNite Ize MicroLink Carabiner PK 4 4 pcs£9.25Carabiner
Nite Ize CamJam XT LargeNite Ize CamJam XT Large£11.00Carabiner, D-Shape
Draper Karabiner Bungee 1000mmDraper Karabiner Bungee 1000mm£3.49Carabiner
Trespass Dorf Carabiner Pack 3Trespass Dorf Carabiner Pack 3£9.46Carabiner
Faithfull Zinc Plated Fire Brigade Snap Hook Carabiner 6mm Pack ofFaithfull Zinc Plated Fire Brigade Snap Hook Carabiner 6mm Pack of£2.42Carabiner
Nite Ize S Biner Key RingNite Ize S Biner Key Ring£6.00Carabiner

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