Swing Case by UnderCover®. If you often haul bulky items and there's no room for a toolbox in your truck bed,this swing box is the solution you've been looking for. The unique design allows the box to go over your wheel well, so when it's locked in place, it's out of the way and you can use the whole truck bed. Made of super-durable ABS plastic, the piece will protect your tools from the elements and prying eyes