Keyless Bushing Flange Type Flanged For Bore Diameter 42 mm Keyless Bushing Type Multi-Screw Locking Assembly Material Steel Outside Diameter 75 mm Overall Width 42.5 mm System of Measurement Metric Finish Oil Dipped Hub Contact Pressure 33 015.856 psi Maximum Transmitted Torque 93 ft-lb Outside Diameter Tolerance +0/-.002 in