Keyless Bushing Flange Type Flanged For Bore Diameter 15 mm Keyless Bushing Type Multi-Screw Locking Assembly Material Steel Outside Diameter 1 3/16 in Overall Width 24.5 mm System of Measurement Metric Finish Oil Dipped Hub Contact Pressure 31 269.995 psi Maximum Transmitted Torque 81 ft-lb Outside Diameter Tolerance +0/-.002 in