Brute CrossOver Tool Boxes are built with .063 in. thick aluminum diamond tread and .080 in. aluminum reinforcement throughout the box. Our Low Profile Lid Crossover box is designed to mount behind the truck cab with lid edges resting on the bed rails. It features a full rubber weather seal, underbody supports for extra strength, reinforced struts and more. Includes a sliding organizer tray and tool holder built into the interior side wall. Polished aluminum finish. Made in USA.