【Stainless Steel Drawer Runners】Made of 1mm high-density high strength stainless steel, stainless steel drawer runners anti-rust ability is 2 times higher than ordinary slide rails, load capacity 45kg. 【Side Mount Drawer Runner】Quantity: 1 pair, mounting screws included.Length: 500mm(20 inch).You can choose the size of the rails according to the depth of the drawer. *The length of the slide should be ≤ the length of the drawer. Installation clearance:12.7mm~13mm(Each). Easy to install. 【Detachable & smooth】There is a plastic buckle on the back of the slide rail, and the drawer can be easily taken out by pressing it, easy to install. Rubber cushion cushion, avoid pushing and pulling collision during use. Double rows of solid steel balls make the drawer open smoother and quieter. 【Long Service Life & Full Extension】Passed more than 50,000 opening and closing tests, demonstrating their exceptional durability.3-Fold full extension Drawer runners, so that the drawer can be fully drawn out, which is convenient for storing items. 【Multiple Sizes ball bearing runners】Stainless steel drawer runners are available in 250 300 350 400 450 500 550 600mm. If you have any problems, please be the first contact us.