Keyless Bushing Flange Type Not Applicable For Bore Diameter 1 1/2 in Keyless Bushing Type Multi-Screw Locking Assembly Material Carbon Steel Outside Diameter 2 35/64 in Overall Width 1.224 in System of Measurement Inch Hub Contact Pressure 20 729 psi Maximum Transmitted Torque 908 ft-lb Outside Diameter Tolerance +0.0015 in