Keyless Bushing Flange Type Flanged For Bore Diameter 1 3/8 in Keyless Bushing Type Multi-Screw Locking Assembly Material Steel Outside Diameter 2 1/8 in Overall Width 1.299 in System of Measurement Inch Finish Oil Dipped Hub Contact Pressure 25 363.502 psi Maximum Transmitted Torque 504 ft-lb Outside Diameter Tolerance +0/-.002 in