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