DMM Revolver Carabiner Review

The amount of friction-reducing benefit you see on lead varies according to how much or little the rope twists and turns, and whether the rope tracks completely or only partly across the pulley. In ideal conditions, the Revolution reduces rope drag as much as a single over-the-shoulder runner with biners. At $03 a pop, you'd go broke rigging every draw and sling with a Revolver, but it's great to have a few on hand for those pesky off-to-the-side pieces, or for using as impromptu pulleys for hand-hauling.