These heavy-duty drawer slides are built from cold rolled steel with a zinc-plated finish for strength, durability, and corrosion resistance. The three-section full-extension design allows full access to the drawer, while the lock-in and lock-out feature adds stability and security. Ball-bearing action and a nylon buffer help provide smooth, quieter operation. Designed for side-mount installation, they are suitable for cabinets, tool storage, industrial drawers, RVs, trucks, and similar applications. Mounting hardware is included for installation.