1、COLD ROLLED STEEL: The drawer slide rail is made of 2mm thick cold rolled steel, with high density and thickness, good impact resistance, and can bear 120KG of heavy objects, ensuring stable and safe sliding of the drawer, and long service life. 2、FULL EXTENSION: The length of the slide rail is 400mm, with a fully extended length of 700mm, leaving sufficient space. During installation, space is reserved for screwing into the stairs, the fully extended function allows the drawer to be fully pulled out. 3、STABLE SLIDING: With a special electrophoretic coating finish, this slide rail has good rust and oxidation resistance, and equipped with industrial grade solid steel balls inside, minimizing friction and making sliding smoother and quieter. 4、APPLICABLE CABINET: This slide rail is suitable for cabinets and any staircase cabinets under stairs, as well as heavy duty drawers such as wine cabinets and wardrobes that require strong load bearing capacity, easy to install and use. 5、APPLICABLE SIZE: The rail installation height is 58mm, suitable for 420‑600mm cabinet depth and 400‑600mm cabinet width, the cabinet height does not exceed 2 meters and has a wide range of applications. 2 x Slide Rails Item Type: Drawer Slide RailsMaterial: Cold Rolled SteelSuitable Cabinet Depth: Approx. 420-600mm / 16.5- 23.6inRail Installation Height: Approx. 53.8mm / 2.1inSuggested Cabinet Width: Approx. 400-600mm / 15.7- 23.6inCabinet Height: No more than 2 meter / 6.6ftBoth Sides Cabinet Gap: Approx. 5mm / 0.2inLoad Bearing: Approx. ≤120KG / 264.5LBSlide Rail Length: Approx. 400-700mm / 15.7- 27.6in