These heavy-duty drawer slides are built from high-hardness steel for strong support in cabinets, industrial drawers, RVs, trucks, and other storage applications. The full extension 3-fold design gives you access to the entire drawer while the locking mechanism helps keep contents secure. Double-row ball bearings and nylon cushioning promote smooth, quieter operation. A galvanized finish helps resist rust and wear for long-term use. This listing includes 1 pair of 48-inch drawer slides.