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