Top material: The use of the best quality plastic, nuts, straps, better performance What You Can Get:2 strong straps, 2 front buckle and 2 back buckle,2 magnet,Some nut screws Safer: it can fix the truck bed, so that it does not shake when driving, to ensure driving safety Installation: According to the instructions, you can install it quickly About Us: If for whatever reason, you decide you are not satisfied, you can request a replacement