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Auto-locking carabiners

Climbing carabiners allow you to attach all your gear to your harness, set up an anchor, belay the lead climber, or abseil using a descender. At Glisshop, we offer no fewer than 25 models of auto-locking carabiners for maximum safety, including H-type (HMS) models for belaying and B-type models for all other common manoeuvres. Carabiners come in three main categories: non-locking straight or bent gate carabiners, traditional screwgate models, and the latest generation of auto-locking carabiners with 2- or 3-action mechanisms.

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Black Diamond Rocklock Twistlock Gray Black Diamond Rocklock Twistlock Gray
Black Diamond
Carabiners Rocklock Twistlock Gray

  • Recommended price

    £15.75

    -11%

    £13.99

Black Diamond's RockLock Twistlock Gray is a wide, lightweight, and practical carabiner for one-handed operation.
Colour
  • Black Diamond Rocklock Twistlock Gray
Petzl Am'd Twist Lock Petzl Am'd Twist Lock
Petzl
Carabiners Am'd Twist Lock

  • Recommended price

    £21.03

    -28%

    £14.96

Petzl's 'Am'd Twits-Lock is a D-shaped carabiner with a two-movement lock that is perfect for connecting to a grigri, a figure eight, a single connection to an anchor, etc.
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Petzl Sm'd Twist Lock Petzl Sm'd Twist Lock
Petzl
Carabiners Sm'd Twist Lock

  • Recommended price

    £18.39

    -19%

    £14.87
Petzl Omni Triact-Lock Petzl Omni Triact-Lock
Petzl
Carabiners Omni Triact-Lock

  • Recommended price

    £30.71

    -20%

    £24.55

The Petzl Omni Triact-Lock carabiner combines symmetrical shape, triple locking and sturdiness to effectively secure your attachment points during technical practices.
Edelrid Oval Power 2500 Triple Icemint Edelrid Oval Power 2500 Triple Icemint
Edelrid
Carabiners Oval Power 2500 Triple Icemint

  • Recommended price

    £15.75

    -16%

    £13.20

-
Colour
  • Edelrid Oval Power 2500 Triple Icemint
  • Edelrid Oval Power 2500 Triple Silver
Black Diamond Pearlock Twistlock Carabiner Gray Gray Black Diamond Pearlock Twistlock Carabiner Gray Gray
Black Diamond
Carabiners Pearlock Twistlock Carabiner Gray Gray

  • Recommended price

    £17.51

    -15%

    £14.87

The Black Diamond Pearlock Twistlock Carabiner Gray is an ergonomic and lightweight carabiner, ideal for efficient and safe belaying.
Colour
  • Black Diamond Pearlock Twistlock Carabiner Gray Gray
Grivel Clepsydra S K10GS Twin Gate Orange Grivel Clepsydra S K10GS Twin Gate Orange
Grivel
Carabiners Clepsydra S K10GS Twin Gate Orange

  • Recommended price

    £18.39

    -28%

    £13.11

-
Colour
  • Grivel Clepsydra S K10GS Twin Gate Orange
Autumn Offers
Edelrid Hms Strike Triple Silver Edelrid Hms Strike Triple Silver
Edelrid
Carabiners Hms Strike Triple Silver

  • Recommended price

    £19.27

    -13%

    £16.63

The Edelrid HMS Strike Triple Icemint is an HMS carabiner with a three-movement closure for increased safety.
Colour
  • Edelrid Hms Strike Triple Silver
Edelrid Pure Slider III Oasis Edelrid Pure Slider III Oasis
Edelrid
Carabiners Pure Slider III Oasis

  • Recommended price

    £17.51

    -15%

    £14.87

-
Colour
  • Edelrid Pure Slider III Oasis
Black Diamond Rocklock Triple Lock Gray Black Diamond Rocklock Triple Lock Gray
Black Diamond
Carabiners Rocklock Triple Lock Gray

  • Recommended price

    £19.27

    -13%

    £16.63

The Black Diamond Rocklock Triple Lock Gray is a forged aluminum HMS carabiner designed for belaying and rappelling, featuring a triple-action automatic locking system for safety and ease of use.
Colour
  • Black Diamond Rocklock Triple Lock Gray
Grivel Carabiners Clepsydra S K10Gs Overview Grivel Carabiners Clepsydra S K10Gs Detail
Grivel
Carabiners Clepsydra S K10Gs

  • Recommended price

    £21.91

    -10%

    £19.71

The Clepsydra S K10GS belay carabiner combines a compact hourglass shape with a Twin-Gate system for more stable rope management.
Grivel Mega - K6G Twin Gate Orange Grivel Mega - K6G Twin Gate Orange
Grivel
Carabiners Mega - K6G Twin Gate Orange

  • Recommended price

    £17.51

    -25%

    £13.11

The Grivel Mega - K6G Twin Gate is an HMS-type carabiner, made of forged aluminum and featuring a Twin Gate double locking system.
Colour
  • Grivel Mega - K6G Twin Gate Orange
C.A.M.P. Orbit 2Lock Gun Metal Blue C.A.M.P. Carabiners Orbit 2Lock Gun Metal Blue Keypoints
C.A.M.P.
Carabiners Orbit 2Lock Gun Metal Blue

  • Recommended price

    £17.51

    -15%

    £14.87

The C.A.M.P. Orbit 2Lock Carabiner in Gun Metal Blue delivers safety, compact design, and ergonomic performance.
Colour
  • C.A.M.P. Orbit 2Lock Gun Metal Blue
Grivel Plume HMS - K3GH Twin Gate Orange Grivel Carabiners Plume HMS - K3GH Twin Gate Orange Keypoints
Grivel
Carabiners Plume HMS - K3GH Twin Gate Orange

  • Recommended price

    £12.85

    -11%

    £11.44

The Grivel Plume HMS – K3GH Twin Gate Orange is a compact and lightweight HMS carabiner with the Twin-Gate system that prevents unwanted openings. 
Colour
  • Grivel Plume HMS - K3GH Twin Gate Orange
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Black Diamond Vaporlock Twistlock Gray Black Diamond Vaporlock Twistlock Gray
Black Diamond
Carabiners Vaporlock Twistlock Gray

  • Recommended price

    £17.51

    -15%

    £14.87

The Black Diamond Vaporlock Twistlock Carabiner Gray is a lightweight carabiner that increases braking for optimized belaying in the mountains.
Colour
  • Black Diamond Vaporlock Twistlock Gray
C.A.M.P. Atom 2Lock C.A.M.P. Atom 2Lock
C.A.M.P.
Carabiners Atom 2Lock Gun metal

  • Recommended price

    £18.92

    -12%

    £16.63

The Camp Atom 2Lock is an HMS carabiner with an automatic two-movement locking system for greater safety.
Colour
  • C.A.M.P. Atom 2Lock
Petzl Carabiners Freino Overview Petzl Carabiners Freino Detail
Petzl
Carabiners Freino

  • Recommended price

    £39.51

    -22%

    £30.71

The Petzl Freino is a braking carabiner that can be used as a single rope with a Grigri or descenders such as the Petzl Stop or Petzl Huit.
Edelrid Hms Bullet Triple Icemint Edelrid Hms Bullet Triple Icemint
Edelrid
Carabiners Hms Bullet Triple Icemint

  • Recommended price

    £21.03

    -20%

    £16.63

-
Colour
  • Edelrid Hms Bullet Triple Icemint
Edelrid Hms Bulletproof Triple Slate Edelrid Hms Bulletproof Triple Slate
Edelrid
Carabiners Hms Bulletproof Triple Slate

  • Recommended price

    £26.31

    -16%

    £21.91

-
Colour
  • Edelrid Hms Bulletproof Triple Slate
Edelrid Hms Strike Slider FG II Oasis Edelrid Hms Strike Slider FG II Oasis
Edelrid
Carabiners Hms Strike Slider FG II Oasis

  • Recommended price

    £24.55

    -21%

    £19.27

-
Colour
  • Edelrid Hms Strike Slider FG II Oasis
Edelrid Hms Strike Triple FG II Icemint Edelrid Hms Strike Triple FG II Icemint
Edelrid
Carabiners Hms Strike Triple FG II Icemint

  • Recommended price

    £23.67

    -18%

    £19.27

-
Colour
  • Edelrid Hms Strike Triple FG II Icemint
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Pros of an auto-locking carabiner compared to a screwgate model

Superior handling:

No more tedious screwing and unscrewing of the locking sleeve every time you open the carabiner. With an auto-locking model, you can open and close it single-handedly in seconds.

Enhanced safety:

The auto-locking carabiner has the major advantage of closing and locking itself automatically as soon as you release the gate. The spring-loaded gate snaps back into place, and the integrated 2- or 3-action mechanism ensures a secure closure. You can therefore use any self-locking carabiner that appears closed with confidence, if it looks shut, it is fully locked.

Cons of this type of carabiner

Auto-locking carabiners can be more temperamental in winter conditions, whether in mountaineering or ski touring. The locking sleeve can freeze on the gate, making operation difficult depending on the temperature. For alpine use, it’s often better to stick with traditional screwgate carabiners.

Best uses for an auto-locking carabiner

This type of carabiner is particularly effective as a belay carabiner attached to the belay loop. It saves valuable time when alternating between climber and belayer. It’s a real advantage for indoor climbing. In other situations, the time saved is less critical, and using an auto-locking model doesn’t replace the final safety check before use.

The different types of self-locking carabiners in climbing

Manufacturers such as Petzl, Black Diamond, Beal, Grivel, Edlerid, Ocun and Camp offer several types of auto-locking carabiners. Some feature 2-action systems, while others use 3-action mechanisms.

2-action auto-locking carabiners:

These carabiners open in two steps: first, rotate the sleeve, then pull back the gate. Once released, the gate automatically locks and the sleeve returns to its original position. It’s hard to get more efficient than that.

3-action auto-locking carabiners:

For even greater security, manufacturers have developed 3-action systems. Some models also feature ball-lock mechanisms that require pressing a button before unlocking the sleeve, or dual opposing gate systems for added safety.

To refine your choice and better understand the specifics of each locking mechanism, check out our expert guide on the various types of climbing carabiners.