These heavy-duty side-mount drawer slides are built from high-hardness steel for durable performance in cabinets, industrial drawers, RVs, trucks, and commercial storage setups. The 3-fold full-extension design gives you access to the entire drawer, while double-row ball bearings help provide smooth, quiet operation. A dual lock mechanism helps keep drawers securely in place during movement and transport. The galvanized finish is designed to resist rust and wear for long-term use. This pair also includes screws and guides for installation.