The Phoenix 3/4in. x 4in. V-Belt Pulley is a heavy-duty split steel pulley fabricated from solid steel stock. Replacement for lawn and garden, farm and agricultural, and industrial equipment. U.S.A. Bore Diameter (in.): 3/4, Material Type: Split steel, Part Type: Pulleys, Pulley Diameter (in.): 4, Product Style: V-belt pulley, Compatible With: Outdoor power equipment