Keyless Bushing Flange Type Flanged For Bore Diameter 24 mm Keyless Bushing Type Multi-Screw Locking Assembly Material Steel Outside Diameter 50 mm Overall Width 34.5 mm System of Measurement Metric Finish Oil Dipped Hub Contact Pressure 31 533.171 psi Maximum Transmitted Torque 25 ft-lb Outside Diameter Tolerance +0/-.002 in