If you are looking for the most secure way to store your gear, look no further. Unlike most tool boxes on the market that use a low-grade metal padel lock, the CamLocker system uses a revolving cam that hooks through a welded catch to secure it in the closed position. Breaking in without a key would actually require the lid to be broken or the use of power tools. When you leave your truck you can feel confident that your tools, firearms, or gear will still be there when you get back. CamLocker side mount tool boxes are constructed from 5/8 gauge polished Aluminum in gloss black powder coat. The boxes are designed specifically to mount on the side rails of your truck bed, either by themselves or in addition to a crossover tool box. All CamLocker side mount tool boxes are 12 inch front-to-back and are built with a 4 inch deep and 6 inch tall notch to fit around the side rail and sit 6 inch above the side rail of the truck bed. Inside the box, you will find felt carpeting on all sides and on the bottom, which gives the box a high-end look and helps protect your gear. It's also mold and mildew resistant and the floor section is removable for easy cleanup. For nearly three decades, American Aluminum has built boxes for the Military, the FBI, and law enforcement agencies and now the CamLocker side mount tool boxes is available for you to outfit your truck.