2- 3/8" X 5/8" (60 x 16 mm) pulley with a steel sheave, aluminum side plates and a needle bearing. Bearings decrease the amount of surface area in contact with the axle, which creates a more efficient transfer. By rolling the load around the axle, load on the transfer point is increased, which results in faster wear, shortening the life of the pulley. Strong general use steel sheaved pulleys for applications with wire rope. Top hole will accept two carabiners. Min. breaking strength 5,000 lbf. (22.24 kN). Weight 11 oz. (311 g). Made in the U.S.A.