Buyers Products Universal Underbody Truck Tool Box Shelf Kit is designed for use with any brand underbody or underbed truck tool box. Optimize the storage space inside your truck box with this heavy-duty, 3-piece kit, compatible with any brand of underbody or underbed truck box. Constructed from durable, 16-gauge galvanized steel, this kit comes complete with one shelf and two brackets. The shelf is adjustable to three different heights to accommodate various sizes of tools and equipment. No tools are required for assembly or installation.