Keyless Bushing Flange Type Flanged For Bore Diameter 85 mm Keyless Bushing Type Multi-Screw Locking Assembly Material Steel Outside Diameter 125 mm Overall Width 50.5 mm System of Measurement Metric Finish Oil Dipped Hub Contact Pressure 28 693.097 psi Maximum Transmitted Torque 397 ft-lb Outside Diameter Tolerance +0/-.002 in