Vertical caving terminology and methods > Personal SRT gear
A steel carabiner used together with a Stop or Simple descender, to add more friction. Attached to the D-ring, so that the down rope can go through it after leaving the descender. Requires the down rope to be held away from the body to add friction. Alternatively, the down rope can go through the carabiner, wrap once around the spine of the carabiner, then go through the carabiner again, to add even more friction. It can then be held in the usual position instead of away from the body, but this method twists the rope quite badly, so is not often used.
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