Pickup Truck Tool boxes serve several purposes: to organize your tools making them handy when you need them, to prevent tools from sliding around the bed of your truck which not only can damage both but is dangerous, to protect tools from the weather as most good tool boxes Leonard sells will remain dry, and finally to secure your tools. Even if you don't lock it every time you leave your truck at least the contents are concealed, which somewhat reduces the risk of theft. However, many of our tool boxes have thoughtful locking systems.
Tool boxes come in a huge variety of sizes but by far the most popular is the cross-over (meaning the tool box rests on the side rails of the truck bed. Some are deep but many are not as deep so that you can still slide 8' lumber under it. Also the tops have changed. It used to be that wing lids were common so you could open the tool box from one side - but now the single lid works where either handle will lift the entire lid with gas prop help.