A high strength multi-functional double pulley for block-and-tackle systems and complex operations. Features large wheels, a main attachment hole that accommodates three carabiners with two secondary holes on the sides, and a large bucket. Prusik minding, the self-locking knot can be installed on both sides of both wheels. Self-lubricated bushings are perfect for light applications at low speed. For ropes up to 16 mm Efficiency: 90% Aluminum alloy body and wheels, stainless steel axle Maximum Breaking Load: 38 kN Working Load Limit: 8 kN Width: 100 mm Length: 147 mm Thickness: 54 mm Weight: 405 g Self Lubricating Bushings Recommended for : General Use, Self Rescue