Drawer slides: Fully extendable drawers are outdated. successfully passes the tests of professional testing centers. The slides have been customized. opened and closed more than 100,000 times and are sturdy and durable. The normal service life of the guides is more than 30 years. Heavy-duty drawer slides: Dimensions: 400 mm, installation thickness: 12.7 mm (each), width: 50 mm, maximum load: 70 kg, total length: 81.3 cm, delivery contents: set of 2 left (1 pair of rails), no, including mounting brackets and screws. Removable and fully retractable (non-locking) drawer slides: It has a plastic lock on the back of the inner rail, which can be removed by pushing and pulling. The 3 folding sliders allow the sliders to be fully unfolded, making them smooth and quiet, avoiding push-pull collisions during use and reducing noise. Rust and corrosion protection: thanks to high-quality electroplating then to blue coating, it has a capacity of high rust protection and durability. Tip: Metal parts