UWS 72" Crossover Truck Tool Box Model TBS-72-MBUWS 72" Crossover Truck Tool Box Model TBS 72 MB UWS crossover truck tool boxes are the tried and true way of keeping your tools organized, on hand and fully secure no matter where you and your truck roam. Each UWS tool box is built from extra thick aluminum welded into a single piece tub. This provides the tool box with reliable strength and helps keep the interior sealed off from the elements. Aluminum construction also makes the box highly