Quick Detachable Bushing, Series E, Bore Dia. 1-15/16 In., Bolt Circle Dia. 5 In., Bolt Size 1/2-13x2-3/4 In., Length 2.625 In., 3/4 In Per Foot On Diameter Taper, Steel, Iron Material, SAE Grade 5, For Sheaves, Sprockets, Pulleys, Includes Cap Screws