Petzl Tandem Pulley $55.95 P21 Fixed sides and self-lubricating bushings, ideal for use with rope clamp/grabs and OK or Am'D carabiners from the PETZL range.
Advantages: pulley and hoist systems, essential for rescue and transport situations.
Pulleys and rope pulley systems for rescue, mountain climbing, arborists, fire fighters, rock and tree climbers, industrial rope access professionals. Swivel pullys and complex high strength pulley systems and kits, Variations can include ratcheting, micro block, velocity, trolley, single, double, tandem locking, knot passing, rope grab and clamp, prusik application features. For application such as rigging, belaying, rappelling, rescue victim stretcher raising, lifting and lowering.