Lotus Development Lift Jack Rock Slider Adapter w/Locking Pin Adapter includes an auto-locking and removable retaining pin Designed to reduce the risk of the Lift Jack from sliding off the rock slider and provide a stable connection. Rock slider cradle for Hi-Lift style Lift Jacks Fits tubes up to 2.25" in diameter. All steel construction & powder coated Materials sourced, assembled, welded, finished, and packaged here in the USA