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 1.673 in System of Measurement Inch Finish Oil Dipped Hub Contact Pressure 27 729.853 psi Maximum Transmitted Torque 145 ft-lb Outside Diameter Tolerance +0/-.002 in