YENUO 3 Pairs Full Extension Drawer Runners Side Mount Ball Bearing Metal Black Slides Rails Track Guide Glides Heavy Duty 45 KG 250mm (12") 400mm 

• 【High quality, long service life】Made of 1.2mm high-density thickened steel, better bearing capacity. which is durable and the normal service life of the slide rail exceeds 30 years.Installation dimension description：25 mm space between drawer and cabinet wall required (left 12.5mm, right 12.5mm).
• 【Side Mount Drawer Runner】Quantity: 3 pairs. Installation clearance：12.5mm(Each)—Carrying capacity: 45 kg/100 lbs. Screws included.
• Drawer Runner slides suitable for various household drawers. 
• 【Anti-rust & smooth】surface electrophoresis treatment. The electrophoretic layer prevents air from directly contacting the rail steel plate, thereby resisting oxidation and improving corrosion resistance.rubber cushion cushion, avoid pushing and pulling collision during use, double rows of solid steel balls make the drawer open smoother . 
• 【Detachable & full extension】There is a black plastic buckle on the back of the slide rail, and the drawer can be easily taken out by pressing it，Easy to install. 3-Fold full extension Drawer runners, The drawer slide rail is fully extended, so that the drawer can be fully drawn out, which is convenient for storing items. 
• 【Drawer Runner】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.