Keyless Bushing Flange Type Flanged For Bore Diameter 40 mm Keyless Bushing Type Multi-Screw Locking Assembly Material Steel Outside Diameter 67 mm Overall Width 54.8 mm System of Measurement Metric Finish Zinc Plated Hub Contact Pressure 5 224 psi Maximum Transmitted Torque 8 621 ft-lb Outside Diameter Tolerance +/-0.003