【Solid Steel Industrial Balls for Better Weight Support】The slide rail is designed with two sets of ball bearings inside, all made with solid steel balls. In addition to maintaining the slide's mobility, it effectively increases the slide's load capacity. Full extension drawer slides allow easy 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 rail adopts an electrophoretic black process, which isolates the direct contact of water and air to prevent oxidation and rust of the slide rail 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. 【Rustproof, long service life】The surface of the slide rail adopts an electrophoretic black process, which isolates the direct contact of water and air to prevent oxidation and rust of the slide rail and improve