Material Steel, Iron Application For Sheaves, Sprockets, Pulley Bolt Circle Dia. (In.) 5 Bolt Size (In.) 1/2-13x2-3/4 Bore Dia. (In.) 2-3/4 Includes Cap Screw Item Quick Detachable Bushing Length 2.6250" Length (In.) 2.625 Material Steel, Iron SAE Grade 5 Taper 3/4" Per ft. On Diameter Bolt Circle Dia.5" Bolt Size 1/2-13" x 2-3/4" Bore Bushing Series E Bore Dia. 2-3/4