Jobox offers the best and most innovative features in truck storage solutions for the professional application. Jobox Crossovers, Inner sides and Chests utilize the Self-Adjusting Gear-Lock II Dual Rotary Locking System and Self-Aligning Latch Pins to maintain a tight-fitting lid. No adjustments are needed to keep the lid locked down tight. The Gear-Lock II Locking System, heavily-reinforced lids and high-strength body will resist over 2,000 lbs. of prying force to break in. Jobox Topside and Underbody Boxes have a 3-Point Locking System that lock the heavily-reinforced doors on both sides and the top for superior security.