Keyless Bushing B-LOC Shaft Dia 38mm Shaft Dia Tolerance +0/-.05mm Outside Dia 65mm Overall Length 28.5mm Transmissible Torque 815.7856 Ft.-Lbs. Transmissible Thrust 13093.425 Lbs. Hub Contact Pressure 20305.32 PSI Locking Bolt Quantity 8 Bolt Size M6 x 20 Steel Material