Quick Detachable Bushing Bushing Type Quick Detachable Bore Bushing Series SD Bore Diameter 28 mm Length 1.813 in Bolt Circle Diameter 2.69 in Bolt Size 1/4 In.-20 x 1-7/8 in System of Measurement Metric Bushing Diameter 2.188 in Flange Type Split Flange Width 7/16 in For Shaft Type Keyed Includes (3) Cap Screws Keyway Height 3.5 mm Keyway Width 8 mm Length Less Flange 1.375 in Material Steel Overall Diameter 3.188 in SAE Grade 5 Taper 3/4 in Per ft