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 38 mm System of Measurement Metric Finish Oil Dipped Hub Contact Pressure 32 594.882 psi Maximum Transmitted Torque 400 ft-lb Outside Diameter Tolerance +0/-0.002 in