For use with both static and dynamic ropes, this strong yet lightweight pulley is specifically built for use with a Prusik friction knot. Its single attachment point can hold up to three carabiners.. . This product will be shipped directly from Singing Rock and will leave their warehouse in 2-3 business days. Eligible for ground shipping only. . Equipped with ball bearings and a large sheave diameter for better efficiency. . 48mm sheave diameter. . 12kN strength for bottom attachment point. . Comes with a unique production number. . Weighs 424g. . Total strength: 36kN. . Imported. . 8595033340787 30167500006 449070