Features: High-quality material selection, heavy load capacity, durable anti-corrosion, you can use it for a long time. Versatile use, the slide rails can be used for your office desk, cabinet, furniture fittings, kitchen drawer, keyboard tray, tool organizer accessories, dresser drawer rails, shop fittings, and more. Humanized detail design, equipped with steel ball bearings and damping to ensure smooth sliding of the rails, reduce noise, and achieve quiet performance. Adjustable 6 hole heights to meet different people's height requirements more conveniently. Easy to install, it only takes a few minutes to install the rails. Specifications: Material: Iron Size: As the picture shows Color: Black Note: Please allow 1-2cm error due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1 pair of keyboard rails