Keyless Bushing Flange Type Not Applicable For Bore Diameter 45 mm Keyless Bushing Type Single Nut Locking Assembly Material Steel Outside Diameter 73 mm Overall Width 90.5 mm System of Measurement Metric Finish Zinc Plated Hub Contact Pressure 9 572 psi Maximum Transmitted Torque 942 ft-lb Outside Diameter Tolerance +0.003 in