Keyless Bushing Flange Type Not Applicable For Bore Diameter 2 3/16 in Keyless Bushing Type Single Nut Locking Assembly Material Steel Outside Diameter 3 1/8 in Overall Width 3.75 in System of Measurement Inch Finish Zinc Plated Hub Contact Pressure 7 422 psi Maximum Transmitted Torque 1 186 ft-lb Outside Diameter Tolerance +0.003 in