Keyless Bushing Flange Type Flanged For Bore Diameter 75 mm Keyless Bushing Type Multi-Screw Locking Assembly Material Steel Outside Diameter 115 mm Overall Width 50.5 mm System of Measurement Metric Finish Oil Dipped Hub Contact Pressure 28 905.638 psi Maximum Transmitted Torque 312 ft-lb Outside Diameter Tolerance +0/-.002 in