SK158-A Quick Detachable Bushing, Bushing Type Quick Detachable, Bore Diameter 1 5/8 in, Length 1.875 in, Bolt Circle Diameter 3.31 in, Bolt Size 5/16 In.-18 x 2 in, System of Measurement Inch, Bushing Diameter 2.813 in, Flange Type Split, Flange Width 1/2 in, For Shaft Type Keyed, Includes (3) Cap Screws, Keyway Height 3/16 in, Keyway Width 3/8 in, Length Less Flange 1.375 in, Material Steel, Overall Diameter 3.875 in, SAE Grade 5, Taper 3/4 in Per ft