D-ring

Vertical caving terminology and methods > Personal SRT gear

D-ring, D-maillon ("half-round" or "half-moon" in the USA)

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D-ring maillon.
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D-ring connected to other equipment.

A large maillon or carabiner shaped like a letter D, which is used to connect the two sides of a sit harness, and attach other equipment. This is the main load-bearing attachment for a sit harness. In order to be strong enough in all directions over 180°, these are usually much thicker and heavier than a normal carabiner or maillon. Manufacturers may refer to these as multi-directional or semi-circle carabiners.


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