"The Phoenix 1/2in. x 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. Pulley Diameter in. 2, Material Type Split steel, Product Style V-belt pulley, Compatible With Outdoor power equipment, Bore Diameter in. 1/2, Part Type Pulleys. Set screws are factory inserted for strength"