These heavy-duty side-mount drawer slides are built from cold rolled steel for durable, long-lasting performance in demanding storage and equipment applications. The 3-section full extension design gives you complete access to the drawer, while the lock-in and lock-out function adds stability and security. Ball-bearing operation and a nylon buffer help provide smooth, quieter sliding action. Designed for use in cabinets, industrial drawers, RVs, trucks, and similar setups, this 1-pair kit also includes mounting hardware for installation.