Keyless Bushing Flange Type Flanged For Bore Diameter 1 1/8 in Keyless Bushing Type Multi-Screw Locking Assembly Material Steel Outside Diameter 1 7/8 in Overall Width 1.299 in System of Measurement Inch Finish Oil Dipped Hub Contact Pressure 27 899.853 psi Maximum Transmitted Torque 371 ft-lb Outside Diameter Tolerance +0/-.002 in