Product FeaturesAOLISHENG heavy duty drawer slides are made of high quality cold rolled steel, high strength and high density. They can withstand heavy duty storage without deformation. The bottom is equipped with limited rubber bumper and ABS plastic for good wear resistance and impact resistance. Rustproof, long service lifeThe surface of the slide has been electroplated with blue zinc treatment to isolate 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. Solid Steel Industrial Balls for Better Weight BearingThe 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 extended for easy storage. 3-Fold Full Extension & Removable Triple extension allows the slides to be fully extended, allowing the drawer to be fully pulled out for easy access to the entire storage space of the drawer. By pressing the locking handle and continuing to pull, the inner rails can be removed for easy installation and cleaning. Usage TipsThe length of the rail should be the length of the drawer. The metal parts are sharp during installation. It is recommended to wear gloves for installation. You can choose the size of the rails according to the depth of the drawer.