The Phoenix 1in. x 4 1/2in. 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. Product Style: V-belt pulley, Pulley Diameter (in.): 4 1/2, Bore Diameter (in.): 1, Part Type: Pulleys, Compatible With: Outdoor power equipment, Material Type: Split steel