Keyless Bushing Flange Type Not Applicable For Bore Diameter 1 7/8 in Keyless Bushing Type Single Nut Locking Assembly Material Steel Outside Diameter 2 7/8 in Overall Width 3.563 in System of Measurement Inch Finish Oil Dipped Hub Contact Pressure 4 200 psi Maximum Transmitted Torque 979 ft-lb Outside Diameter Tolerance +/-0.003