Keyless Bushing Flange Type Flanged For Bore Diameter 45 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 30 814.799 psi Maximum Transmitted Torque 100 ft-lb Outside Diameter Tolerance +0/-.002 in