Buyers Products Diamond Tread Aluminum In-Frame Truck Tool Boxes mount between the frame and truck rails to provide low-profile access to tools and equipment. The boxes are perfect for Class 8 trucks in need of additional storage and work with all major semi truck brands including Peterbilt-, Kenworth-, International-, Freightliner-, Western-Star-, Volvo-, and Mack-. The truck tool boxes features sturdy .100 in. thick aluminum construction with .125 in. thick diamond tread lids. The boxes are TIG-welded for strength and offer a full-width stainless steel hinge with solid 1/4 in. pin. The lids features a full-perimeter gutter and automotive bulb seal that are great for keeping out the elements. An adjustable, stainless steel draw latch works with a combination or padlock (sold separately) to help keep your equipment secure. Mounting hardware is included.