Keyless Bushing Flange Type Not Applicable For Bore Diameter 75 mm Keyless Bushing Type Multi-Screw Locking Assembly Material Steel Outside Diameter 115 mm Overall Width 38 mm System of Measurement Metric Finish Oil Dipped Hub Contact Pressure 34 767.874 psi Maximum Transmitted Torque 375 ft-lb Outside Diameter Tolerance +0/-0.002 in