Full extension and space efficiency - 3-fold drawer runners enable full opening and closing of the keyboard drawer, maximizing space and reach inside. High quality material and construction - Heavy duty 1.2 mm (0.50 inch) thick cold rolled steel with a black powder coating for increased strength and durability over ordinary rails. - Rigid structure and reliable performance under regular use. Easy to install and secure - Includes 4 positioning screw holes for precise mounting and height adjustment to fit your setup. - Widened bracket provides strong bearing capacity and helps prevent detachment. Wide compatibility and flexible use - Suitable for all kinds of keyboard drawers, cabinets, lockers, and containers. - Can be used on office desks, cabinets, furniture hardware, kitchen drawers, keyboard drawers, tool organizers, dresser drawer rails, shop equipment, and more. Use scenarios - Under-desk keyboard tray: extend fully to reach the keyboard and peripherals without crowding the desk. - Kitchen or dresser drawers: smooth operation for utensils, small items, or tools with reliable support. - Tool cabinet or workshop storage: sturdy rails that tolerate frequent access and heavier contents.