The Buyers Products 24-Inch Universal Heavy-Duty Tire Chain Hanger provides storage space for tire chains which are required by federal law in many states. The universal design fits all major semi-truck brands. Constructed from powder-coated structural steel and diamond tread aluminum, the locking lid allows for the use of a personal padlock (not included). The chain changer is 24 inches long and includes pre-drilled mounting holes for fast frame mounting.