Features and DetailsThree-Section Drawer Slides: You can get 1 pair of locking drawer slides: 40"/ 101.6 cm in length, 3"/ 7.6 cm in width, and 0.75"/ 1.9 cm in thickness. Our 3-fold full extension design allows the entire drawer to be extended fully, making it easy to reach. A great helper to maximally utilize your drawer''s space(fully closed length: 40", fully extended length: 80"/ 203.2 cm).Sturdy Steel and 500 lbs Bearing: Constructed with 0.75"/ 19 mm thickness cold-rolled steel (CRS), the heavy-duty drawer slides have up to 500 lbs/ 225 kg load capacity. Secure and rugged enough to support heavy storage without deformation over time. The electroplated surface keeps the extension drawer slides rust-proof and abrasion-proof, ensuring lifetime use. The slides can be applied to goods shelves, cabinets, industrial drawers, RVs, trucks, vending machines, etc.Softly and Quietly Slides with Lock: These slides feature a lock-in and lock-out design for easy control, secure fixation, and no chance of drawer separating from the cabinet. Compared to drawer slides without locks, our drawer slides with locks provide more security and stability. A double row of ball-bearing action provides a smooth slide performance when closing and opening the drawer. The nylon buffer design on the middle-section slides produces less noise and no bounce back.Choose the Right Size: How can you determine the right size of slides for your drawer? Please refer to the detailed description of each size as the picture shows. 0.7"/ 19.2 mm space between drawer and cabinet wall is required (left 0.7", right 0.7"). It is better to measure the length of the drawer and cabinet without the frame board before choosing our drawer slides. Note: The length of slides should be less than or equal to drawer depth.Installation and Usage: Full extension drawer slides are compatible with most major drawer and cabinet types. The heavy-duty drawer slides can be installed on the side of the cabinet or machine parts. All screws and bolts are included for effortless installation. Ideal for new construction, remodeling, and replacement projects, such as industrial drawers, commercial equipment, and retrofitted vehicles. Installation is effortless, so you can use the drawer right away.SpecificationsLength: 40"/ 101.6 cmFully Pull-Out Length: 80"/ 203.2 cmMaterial: Cold Rolled SteelLoad Capacity: 500 lbs/ 225 kgInstall Distance(Each Side): 0.7"/ 19.2 ± 0.3 mmSlide Lock: SupportProduct Width: 3"/ 76 mmProduct Thickness: 0.75"/ 19 mmPackage Content1 x Heavy-Duty Drawer Slide Kit1 x Screw Kit1 x User Manual