72 Diamond Plate Aluminum Low Profile Crossbed Truck Tool BoxThe Diamond Tread Aluminum Contractor Truck Tool Box is a slanted, double level storage solution that mounts on top of your bed rails to save valuable space inside your truck bed. Its lightweight and corrosion resistant aluminum diamond tread construction assures long lasting use and durability. Each truck tool box has two bottom drawers that lock and include adjustable dividers and 100 lb rated slides. Your equipment is secured with four sturdy