Quick Detachable Bushing Bushing Type Quick Detachable Bore Bushing Series SDS Bore Diameter 5/8 in Length 1.313 in Bolt Circle Diameter 5.6875 in Bolt Size 1/4 In.-20 x 1-3/8 in System of Measurement Standard Includes Cap Screws Material Iron Steel SAE Grade 8 Taper 3/4 in per ft On Diameter