Keyless Bushing Trantorque Mini Shaft Dia 0.3750 In. Shaft Dia Tolerance +/- .0015 Outside Dia 0.7500 In. Outside Dia Tolerance +/- .0015 Overall Length 0.8750 In. Transmissible Torque 421 Ft.-Lbs. Transmissible Thrust 2245 Lbs. Hub Contact Pressure 18147 PSI Withstand Temp Up to 400 Deg. F