3020X 2-1/8-A Taper Lock Bushing, Bushing Type Taper Lock, Bore Diameter 2 1/8 in, Length 2 in, Bolt Circle Diameter 4 in, Bolt Size Not Applicable, System of Measurement Inch, Flange Type Flangeless, Flange Width Not Applicable, For Shaft Type Keyed, Includes (2) Set Screws, Keyway Height 1/4 in, Keyway Width 1/2 in, Length Less Flange Not Applicable, Material Steel, Overall Diameter 4.25 in, Taper 8 Degrees