【Solid Steel Industrial Balls for Better Weight Bearing】The slide rail is designed with two sets of ball bearings inside, all made of solid steel balls. In addition to maintaining the mobility of the slide, it effectively increases the load-bearing capacity of the slide. Full extension drawer slides allow access to the entire space, and the drawers can be fully pulled out for easy storage. 【Rustproof, Long Service Life】The surface of the slide adopts an electrophoretic black process, which isolates the direct contact of water and air to prevent oxidation and rust of the slide and improve corrosion resistance. More than 100,000 times of opening and closing tests have been carried out to verify its durability, and the normal service life of the slide rail is more than 30 years. 【Full-extension slides】Full-extension slides allow access to the entire space, and the drawers can be fully pulled out for easy storage. The slides are designed with two sets of ball bearings inside, all made of