The BackRack is constructed with powder coated steel tubing. Every intersecting section is fully welded for maximum strength. This model includes the Toolbox Mounting Kit. Its rugged design provides excellent cab protection and a sturdy structure to secure cargo, carry ladders and mount various warning lights. The BackRack mounts into the stake bed pockets of your full-size pick up truck bed rails and is secured with special bolts, eliminating the need for drilling. The system is compatible with over-the-rail bedliners, however trucks lacking stake pockets will require drilling. The system does not fit Stepsides or Flaresides. Limited Lifetime Warranty.