These heavy-duty full-extension drawer slides are built from high-hardness steel for durable, stable performance in demanding storage applications. The double-locking design helps keep drawers securely in place, even in mobile or rugged environments. Ball-bearing operation and nylon cushioning promote smooth, quieter opening and closing. Designed for cabinets, industrial drawers, vehicles, and commercial equipment, this pair offers strong load support and full access to drawer contents.