【PREMIUM MATERIAL】- Length: 18"; Width: 76 mm; Product Thickness: 19 mm(Each); Plate Thick: 2.5 mm; The drawer slides heavy-duty kit is constructed with thick cold rolled steel(CRS) plates to ensure quality and service life. It is electroplated on the surface for anti-rust & wear-resistant. 【LARGE LOAD CAPACITY】- Our 500 lbs drawer slides can hold up to 500 lbs load to suit different needs. All three sections of rails can be pulled out and allow for the entire drawer to be reached. Entirely Pull Out Length: 36.2". 【SMOOTH SLIDE & LOCK】- Double steel ball-bearing design, offer silent & friction-free motion when open/close drawers. Equip with a yellow unlock/detach button to lock the drawer and prevent over-sliding. 【SIDE MOUNT INSTALL】- The heavy-duty rail slides can be installed on the side of the cabinet or machine parts. Install distance: 19.5 mm. Have preset holes for free installing adjustment. We will provide you with screws and a user manual for guidance. 【INDUSTRY & HOME USE】- This long drawer slides kit is mainly used for industrial, commercial equipment, factory machines, office, vehicle, and home. It is perfect for room furniture, industrial drawers, modified car drawers, office cabinets, etc.