Keyless Bushing Flange Type Flanged For Bore Diameter 48 mm Keyless Bushing Type Multi-Screw Locking Assembly Material Steel Outside Diameter 73 mm Overall Width 62.8 mm System of Measurement Metric Finish Zinc Plated Hub Contact Pressure 4 040 psi Maximum Transmitted Torque 10 338 ft-lb Outside Diameter Tolerance +/-0.003