The ISC Rope Wrench (RP280) creates an S-bend in the rope above your hitch, giving a contained double-rope system on a single line for SRT climbing with smoother friction and easier lateral movement.

For 11-13 mm (7/16"-1/2") climbing ropes; anodized aluminum body with aluminum pulley wheel; 128 g. Not for primary life support: the hitch carries the climber, and a stiff tether is required.