[Fully Stretched and Sturdy]The drawn length of the drawer slides is equal to the closed length. Made from high quality cold rolled steel. Thickness: 13mm, twice the normal slider; Charge: 45 kg (100 LB), or 1.7 times more than a normal slider. 30 year lifespan, with testing, the drawer slides have been successfully opened and closed more than 100,000 times.[Rust Resistant and Durable] Surface electrophoretic treatment to prevent direct contact of ;air and improve resistance to oxidation and corrosion. With rubber brakes at the end of the slide to prevent the slide from automatically opening, it can also reduce noise to 35 decibels for a more comfortable home experience.[Removable Ball Bearing Drawer Slide] The interior of the slide is designed with two sets of ball bearings, all made from solid steel balls. In addition to maintaining the smoothness of the slide, they can also effectively increase the load capacity of the slide. The back of the sliding rail is designed with a removable button that can be removed by pressing it for easy installation and cleaning of the drawer.[Installation Guide]This product is suitable for product length cabinet depth . Mounting space left of drawer: 0.5;(13mm), mounting space right: 0.5; (13 mm). [Product Improvement]The drawer slide is equipped with a switch function. When using, you need to press the drawer inside first, and the drawer will come out automatically. Then you can pull out the drawer, otherwise the drawer cannot be opened because it has a lock function, to prevent young family members from being injured when opening the drawers.