Keyless Bushing Flange Type Not Applicable For Bore Diameter 2 3/8 in Keyless Bushing Type Multi-Screw Locking Assembly Material Steel Outside Diameter 3 17/32 in Overall Width 2.598 in System of Measurement Inch Finish Oil Dipped Hub Contact Pressure 19 868 psi Maximum Transmitted Torque 4 550 ft-lb