Lo-Side Truck Tool Boxes mount over the bed rails of your truck and keep critical tools and parts at your fingertips. The Model 300304-53-01 is an aluminum diamond plate short length low side truck tool box and has a storage capacity of 3.3 cu ft. The Black ARMOR TUF® Powder Coat finish ensures years of dependability. Mounting brackets ensure an easy installation without drilling into the rails. WEATHER GUARD® DEFENDER SERIES™ pickup truck tool boxes come with a Seven year warranty.