The Vevor heavy-duty drawer slides are built for secure, smooth drawer operation in cabinets, toolboxes, RVs, trucks, and industrial storage. Made of high-hardness steel with a galvanized finish, they support up to 250 lbs and resist rust and wear. The dual-lock design helps keep drawers securely in place, while double-row ball bearings provide smooth movement with reduced noise. Their 3-fold full-extension design gives you full access to the drawer contents. This pair includes mounting hardware for installation.