Keyless Bushing, Flange Type Not Applicable, For Bore Diameter 30 mm, Keyless Bushing Type Multi-Screw Locking Assembly, Material Steel, Outside Diameter 55 mm, Overall Width 20 mm, System of Measurement Metric, Finish Oil Dipped, Hub Contact Pressure 17,259.522 psi, Maximum Transmitted Torque 464 ft-lb WARNING: This product can expose you to chemicals including Chromium (hexavalent compounds), which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov. -