Heavy duty, low profile caster with built-in leveling glide Allows solid support by leveler once equipment is in place Simplifies mounting as leveler is integrated with casterWARNING: This product can expose you to chromium, hexavalent chromium, nickel, which are 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.