Keyless Bushing Flange Type Not Applicable For Bore Diameter 3/4 in Keyless Bushing Type Multi-Screw Locking Assembly Material Steel Outside Diameter 1 27/32 in Overall Width 1.024 in System of Measurement Inch Finish Oil Dipped Hub Contact Pressure 37 703.939 psi Maximum Transmitted Torque 19 ft-lb Outside Diameter Tolerance +0/-.002 in