【Locking Protection and Multi-Purpose】Designed with a carabiner, the rail can be locked or unlocked with a swing handle and can be locked in the closed position or fully open to prevent slippage and ensure load security. It can meet all kinds of household needs, such as large and heavy drawer slides, shelves, industrial drawers, toolboxes, RVs, trucks, etc. 【Fully Extended and Robust】The extended length of the drawer slide is equal to its closed length. Made of Q235 cold-rolled steel with a tensile strength > 400 MPa. Thickness: 2 mm, 3.3 times that of a standard slider; Load capacity: 120 kg (265 lbs), which is 4.4 times more than a standard slider. 【Rust Resistant and Durable】The surface is treated with high-quality blue galvanized zinc to prevent direct contact with air and improve resistance to oxidation and corrosion. Rubber pads reduce the drawer's closing force. Solid ball bearings provide quiet, frictionless movement. 【Installation Guide】This product is suitable for drawers