An ultra slim, highly functional pulley. The attachment hole allows full rotation of the carabiner. For ropes up to 13 mm. Prusik minding, the self-locking knot can be installed on one side. Self-lubricated bushings are perfect for light applications at low speed. Efficiency: 80%. Aluminum alloy body and wheel, stainless steel axle.WEIGHT95 gSPECSID: 2152 Max Breaking Load: 24 kNWorking Load Limit: 2 kN x 2 = 4 kN