Keyless Bushing Flange Type Not Applicable For Bore Diameter 80 mm Keyless Bushing Type Multi-Screw Locking Assembly Material Steel Outside Diameter 120 mm Overall Width 90 mm System of Measurement Metric Finish Oil Dipped Hub Contact Pressure 31 938.15 psi Maximum Transmitted Torque 914 ft-lb Outside Diameter Tolerance +0/-.002 in