Keyless Bushing Flange Type Flanged For Bore Diameter 22 mm Keyless Bushing Type Multi-Screw Locking Assembly Material Steel Outside Diameter 45 mm Overall Width 34.2 mm System of Measurement Metric Finish Zinc Plated Hub Contact Pressure 9 373 psi Maximum Transmitted Torque 2 965 ft-lb Outside Diameter Tolerance +/-0.003