Aolissheng Drawer Slides: Aolissheng's full extension drawer slides have passed the test of professional testing institutions. The opening and closing times of the slides exceed 100,000 times, which is durable, and the normal service life of the slides exceeds 30 years. Heavy Duty Drawer Slides: Size: 400mm / 15.7in, Installation Thickness: 12.7mm (each), Width: 50mm / 2in, Maximum Load: 70kg / Total Length: 81.3cm / Package Contents: 2 Pack (1 Pair of Slides) Left and Right. Mounting brackets and screws are not included. Detachable and Full Extension Drawer Slides: There is a plastic buckle on the back of the inner rail, which can be removed by pressing and pulling. 3-fold slides, allowing the slides to extend fully, smoothly and quietly, avoiding push and pull collisions during use, reducing noise. Anti-rust and Anti-corrosion: It adopts high-quality galvanizing and then blue plating, which has high anti-rust ability and is durable. Tips: The metal parts are sharp during installation. Please protect your hands. It is recommended to wear gloves for installation.