Lock Protection and Multi-UseDesigned with a carabiner, the rail can be locked or unlocked by a swing handle and can be locked in the closed and fully opened state to prevent slipping and ensure the safety of the charge. It can meet all kinds of household needs, such as large and heavy drawer slides, shelves, industrial drawers, tool boxes, RVs, trucks, etc. Fully Stretched and SturdyThe drawn length of the drawer slide is equal to the closed length. Made from Q235 cold rolled steel with tensile strength &gt; 400 MPa. Thickness: 2mm, 3.3 times the normal slider; Load: 120 kg (265 LB), which is 4.4 times more than a normal slider. Rust Resistant and DurableThe surface is treated with high quality galvanized blue zinc to prevent direct contact with air and improve resistance to oxidation and corrosion. Rubber mats may reduce the closing force of the drawer. Strong ball bearings provide quiet, friction-free movement. Installation GuideThis product is suitable for product length cabinet depth. Mounting space left of drawer: 0.75 inch (19 mm), mounting space right: 0.75 inch (19 mm). Note: Due to different usage scenarios, this product does not include screws. You can buy the M5 screws yourself. Steel ball bearing High density 6mm solid steel balls, loaded and pulled more than < p>quiet and smooth, durable use. Locked design The lock is available when fully opened and closed Prevents slipping. Easy and secure control fixing Load capacity: Maximum load is 120 kg Material thickness: p> Premium quality steel sheet: Thickness: 2 mm Cold rolled steel Q235