Full extension (3 members) Installed with ball creep prevention mechanism which also provides stable and consistent operating force Only 15.5 mm in height, designed to reduce distortion or bending when extended, which makes it suitable for a variety of different applications Uses only registered NSF H1 Food Grade Lubricant greaseWARNING: 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.