Low profile and heavy duty up to 255 kg (561 lbs), ideal for manufacturing equipment Hardened frame for maximum rigidity and strength Sealed ball bearing swivel assembly provides smooth and long-term service Made with trivalent chromium for RoHS complianceWARNING: This product can expose you to 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.