Keyless Bushing Flange Type Flanged For Bore Diameter 1 5/8 in Keyless Bushing Type Multi-Screw Locking Assembly Material Steel Outside Diameter 2 15/16 in Overall Width 1.358 in System of Measurement Inch Finish Oil Dipped Hub Contact Pressure 18 362 psi Maximum Transmitted Torque 1 090 ft-lb