Keyless Bushing Flange Type Flanged For Bore Diameter 19 mm Keyless Bushing Type Multi-Screw Locking Assembly Material Steel Outside Diameter 1 5/16 in Overall Width 24.5 mm System of Measurement Metric Finish Oil Dipped Hub Contact Pressure 24 686.839 psi Maximum Transmitted Torque 102 ft-lb Outside Diameter Tolerance +0/-.002 in