Keyless Bushing Flange Type Flanged For Bore Diameter 60 mm Keyless Bushing Type Multi-Screw Locking Assembly Material Steel Outside Diameter 90 mm Overall Width 42.5 mm System of Measurement Metric Finish Oil Dipped Hub Contact Pressure 26 412.685 psi Maximum Transmitted Torque 152 ft-lb Outside Diameter Tolerance +0/-.002 in