【Rust Prevention, Long Lifespan】The slide's surface uses an electrophoretic black process, isolating direct contact with water and air to prevent oxidation and rust on the slide and improve corrosion resistance. More than 100,000 opening and closing tests have been performed to verify its durability, and the normal lifespan of the slide is more than 30 years. 【Full Extension Slides】Full extension slides provide access to the entire space, and 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. Besides maintaining the smoothness of the slides, these bearings effectively increase the load capacity of the slides. 【Product Features】Heavy-duty drawer slides are made of high-quality cold-rolled steel, high strength, and high density. They can withstand intensive storage without deformation. The bottom is equipped with a limited rubber bumper and ABS plastic for good wear resistance and impact resistance. 【Usage Tips】The slide length should be ≤ the drawer length. Metal parts are sharp during installation. It is recommended to wear gloves during installation. Dimensions: Length 350mm, Width: 45mm, Thickness: 1.2x1.2x1.4mm