A full train horn system, ready to install. At the heart of this package is the intense triple trumpet air horn, drawing immediate attention. Black color, trumpets are made entirely of a light and durable ABS material while the base is made of metal for a strong support. This system includes a 3 Gallon air tank, 200 PSI 12 volt air compressor, pressure gauge, pressure switch, hose, fittings, thread sealant and mounting hardware. Ideal for all vehicles with a 12V system. A bold, loud choice.