The bumper is made of food-grade materials, moisture-proof, durable and anti-pressure. The surface of the drawer slides is treated with zinc-plated, anti-oxidation, anti-wear and anti-rust.The buckle is detachable and made of food-grade materials, moisture-proof, durable and anti-pressure. Screws: Different screws are required due to your different installation requirement, so it is difficult to unify the matching screws. Loading Capacity: The loading capacity is related to the length of drawer slides. The longer the slide, the smaller the load. 150lbs is the loading capacity of the 18 inch drawer slides. Installation Clearance: The installation clearance of this drawer slides is 13±0.5mm / 1/2in±1/64in. This item is in the category "Home & Garden\Home Improvement\Building & Hardware\Cabinet Hardware\Drawer Slides". The seller is "hoboke2016" and is located in this country: CN. This item can be shipped to United States, United Kingdom, Japan.