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The Petzl Am'D karabiner is great for most uses and thanks to its D-shape it's one of the strongest and lightest locking carabiners out there. The 'D-shape' has the highest strength-to-weight ratio of all karabiner designs. The shape and size of the AM'D is great for most uses, such as connecting a belay device to your harness or as a connector at the end of a lanyard. The D-shape makes it one of the strongest and lightest locking carabiners Petzl makes.

The DMM Captive Eye ensures that in real life situations the connector will never be cross loaded through misalignment. Whatever the captive eye is stitched or connected to it can move freely thanks to the circular hole. The hole can also accommodate a second connector should the need for a rescue point arise.

The OCUN Falcon is the largest D-shaped karabiner in their collection. The Falcon is a karabiner of usual dimensions suitable for equipping climbing routes. It's popular especially amongst climbers who prefer the traditional routes and sandstone climbing. This karabiner is suitable for those who prefer maximum strength and reliability to low weight.

The DMM Phantom is their ultimate trad and alpine screwgate Karabiner, and when you hold those 42 grams you will understand why! They claim they could have made it even lighter, but didn't want to compromise the handling or strength. As you can see from the specification below the strength is still impressive and the gate opening reasonable for a small D shaped karabiner.

The Edelrid Pure Screw is a lightweight, robust screwgate karabiner designed for reliable all-round use in climbing, mountaineering, and rope access. Its offset D-shape and keylock nose ensure smooth clipping and unclipping without snagging, while the large rope contact area reduces wear on both rope and hardware. With a strong H-profile construction and high open-gate strength, this compact karabiner delivers safety, versatility, and durability in one streamlined design.

The DMM Revolver is certified for use as both a karabiner and a pulley. It is the same as DMM's standard Revolver karabiner, but it features a locking gate which provides extra security. There is a small wheel in the rope location groove to reduce rope drag, allowing the rope to run more efficiently through the karabiner. The Revolver is also highly useful for creating lightweight hauling systems. If you need to haul kit, a partner, or perform crevasse rescue, the pulley wheel increases the efficiency and converting more of your energy into movement.

The Petzl Sm'D represents a D-shaped carabiner with a locking mechanism, known for its lightweight and compact design. It finds utility across various scenarios, offering ease of handling even with gloves, and comes in two different locking system variations.

The DMM Spectre is an all-round carabiner for versatility and can be used across trad, sport, or winter climbing. They are full sized for ease of handling, while I-Beam construction and wire gates keep weight low. If you want one type of carabiner to cover all your climbing needs, you need an all-rounder. Wire gates are the lightest gate type available, and resist freezing shut in cold conditions. They are crucial in reducing the weight of your rack, and are ideal for trad, winter, and alpine climbing.