Keyless Bushing Flange Type Flanged For Bore Diameter 1/2 in Keyless Bushing Type Multi-Screw Locking Assembly Material Steel Outside Diameter 1 1/16 in Overall Width 0.807 in System of Measurement Inch Finish Oil Dipped Hub Contact Pressure 29 496.458 psi Maximum Transmitted Torque 46 ft-lb Outside Diameter Tolerance +0/-.002 in