Keyless Bushing Flange Type Not Applicable For Bore Diameter 2 1/4 in Keyless Bushing Type Multi-Screw Locking Assembly Material Steel Outside Diameter 3 17/32 in Overall Width 1.26 in System of Measurement Inch Finish Oil Dipped Hub Contact Pressure 34 422.3 psi Maximum Transmitted Torque 180 ft-lb Outside Diameter Tolerance +0/-.002 in