The UIAA equipment standard provides a baseline for equipment performance in a test lab under controlled conditions on new equipment. Although these test conditions are relevant to the conditions encountered climbing, conditions encountered at the crags and the condition of the equipment are equally important. This recommendation from the UIAA member federation The British Mountaineering Council (BMC) provides vital equipment information that is NOT explicitly addressed in the standard, particularly failure modes of the equipment and recommendations for the use, inspection, maintenance, and retirement of equipment.
AM'D Twist Lock
Description
D-shaped locking carabiner for attaching devices to a harness.
The Am'D asymmetrical aluminum carabiner has a D shape best suited for connecting a belay system or for holding equipment. Its ergonomics and Keylock system facilitate manipulations, even when wearing gloves. The Am'D carabiner is available in three locking system versions: manual SCREW-LOCK system, or automatic BALL-LOCK and TWIST-LOCK systems.
Description:
Great functionality, thanks to its capacity and dimensions:
- efficient shape for use on either end of the carabiner (belay systems)
- carabiner can hold a large quantity of equipment
Good handling and ergonomics:
- shape designed for gripping with gloves on
Available in three locking systems, each for different situations:
- SCREW-LOCK: occasional use, dirty environments
- BALL-LOCK: frequent use with practical automatic locking; secure use with triple-action opening
- TWIST-LOCK: specific use when quick opening is key (e.g. at the end of a lanyard) and when connecting a GRIGRI to the harness
Specifications:
Material(s): aluminum
D-shaped locking carabiner for attaching devices to a harness.
The Am'D asymmetrical aluminum carabiner has a D shape best suited for connecting a belay system or for holding equipment. Its ergonomics and Keylock system facilitate manipulations, even when wearing gloves. The Am'D carabiner is available in three locking system versions: manual SCREW-LOCK system, or automatic BALL-LOCK and TWIST-LOCK systems.
Description:
Great functionality, thanks to its capacity and...
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Weight (g)![]() ![]() |
75 g |
Shape![]() ![]() |
D / Offset D |
Locking![]() ![]() |
Auto - 2 action |
Straight or Bent![]() ![]() |
Straight |
Full Size![]() ![]() |
Yes |
Keylock![]() ![]() |
Yes |
Solid or Wire![]() ![]() |
Solid |
Gate Opening![]() ![]() |
25 mm |
Number of Colors![]() ![]() |
1 |
Lock Indicator![]() ![]() |
No |
Strengths (kN)![]() ![]() | ![]() ![]() ![]() |
No reviews yet.

The Am'D is a good all-around locking carabiner that gives its users peace of mind thanks to an auto-locking twist lock closure system. Having a couple of these large D-shaped carabiners for use at anchors and for belaying makes life a lot easier and less cluttered. The Am'D performs well across a variety of applications and could be considered as a jack-of-all-trades.

The William and Am’D SL, BL, TL and RL locking carabiners offer a versatile array of uses, and can fill nearly any niche in a climber’s rack. I gravitate towards using the William carabiners in anchor set-ups and the Am’Ds on the ground (for the shape and intention); Williams on single pitches and Am’Ds on multi-pitches (for the weight); RL lockers on my person for personal tethers, and SL lockers where I won’t be seeing them (for the gate action). In all, this rack of locking carabiners will be living in my climbing bag for a long time.
Describes with words and helpful photos, how to protect your Petzl carabiners.
A checklist helping you monitor your carabiners health, helping to know when to retire your personal protection equipment.
A pictoral representation of UIAA-121 and EN-12275 standards for connectors (the UIAA's fancy word for carabiners).