Taper Lock Bushing Bushing Type Taper Lock Bore Bushing Series 3020 Bore Diameter 25 mm Length 2 in Bolt Circle Diameter 4 in Bolt Size Not Applicable System of Measurement Metric Flange Type Flangeless Flange Width Not Applicable For Shaft Type Keyed Includes (2) Set Screws Keyway Height 3.5 mm Keyway Width 8 mm Length Less Flange Not Applicable Material Steel Overall Diameter 4.25 in Taper 8 Degrees