Chrome 4 Trumpet Train Air Horn Pack of 2 J70922

"Viking Horns" Loud Sound 149 dB Air Horn, entirely made of metal, Triple Chrome Plated  to withstand all weather conditions. Can be mounted on the roof or under the hood, and also under the vehicles carriage. This Air Horn is specially designed for vehicle owners that want the powerful sound of a loud horn but have limited space in the engine compartment. Can be installed between the radiator and the front bumper facing downward. Comes with a 12 volt electric solenoid & 1/4" air hose. Ideal for cars, trucks, SUV, RV, boats, and many other applications. Trumpets Size:  13-3/4", 11-1/2", 9", 71/2", 3-3/4" diameter each. Overall dimensions: 12-1/4" long x 13-3/4" wide x 4-1/2 high. REQUIRES AN ON BOARD AIR SYSTEM TO OPERATE  (which consists of air compressor and air tank)