【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 mobility of the slide, it effectively increases the load capacity of the slide. Full extension drawer glides provide access to the entire space and drawers can be fully extended for easy storage. 【Anti-rust, long service life】The surface of the slide has been galvanized 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 opening and closing tests have been carried out to verify its durability, and the normal life of the sliding rail is more than 30 years. 【Full Extension Slides】The full extension slides provide access to the entire space and the drawers can be fully extended for easy storage. The slides are designed with two sets of ball bearings inside, all made of solid steel balls. In addition to maintaining the smoothness of the slides, these bearings effectively increase the load capacity of the slides. 【Product Features】AOLISHENG heavy duty drawer slides are made of high quality, high strength and high density cold rolled steel. They can withstand intensive storage without deforming. The bottom is equipped with a limited rubber bumper and ABS plastic for good wear resistance and impact resistance. 【Usage Tips】The length of the rail should be ≤ the length of the drawer. Metal parts are sharp during installation. It is recommended to wear gloves during installation.