PacBrake's polished half gallon aluminum tanks are lighter and less corrosive than steel alternatives and are perfect for storing air onboard your pickup truck. These tanks work in conjunction with air compressors to store the compressed air that allows for quicker activation of your exhaust brake or air horns, or for operation more than one product simultaneously. Each Premium Tank Kit comes with the tank, mounting fasteners, airline, fittings, air accessories, an air nozzle and more!