Keyless Bushing Flange Type Not Applicable For Bore Diameter 38 mm Keyless Bushing Type Multi-Screw Locking Assembly Material Steel Outside Diameter 65 mm Overall Width 26 mm System of Measurement Metric Finish Oil Dipped Hub Contact Pressure 33 077.765 psi Maximum Transmitted Torque 65 ft-lb Outside Diameter Tolerance +0/-.002 in