Buyers Products Kabgard– Toolbox Adaptor Mounting Kit is required when installing a Kabgard–Headache Rack with Crossover or Saddle-style Truck Tool Box. These longer mounting brackets provide the same drill-free mounting of the Kabgard– Headache Rack but offer a longer mounting surface for the Toolbox. The Adaptor Mounting Kits are offered in two sizes to accommodate standard and extra-large Crossover and Saddle-style truck tool boxes. Each kit includes 2 rugged carbon steel brackets that are powder-coated with durable gloss black paint. Mounting hardware is also included.