4 Horn, Train Small Air Horn Kit 12V Quad Trumpets Black 1 Gallon 150PSI Air Compressor for Truck Car Picku Cars Trains. These train horns can fit in almost any vehicle, but deliver the big sound you need. Don’t be fooled by their size, they may be small, but they pack a punch that can rival any air horn out there. Our product will work on almost any vehicle and deliver super loud surround sound when you need it. If you think other drivers won’t see you coming, don’t worry because they sure will hear you. Shiny Chrome Finish? :Our air horn has a glistening chrome finish and can cast a striking and stylish appearance on any vehicle...