Brand New 3 Trumpet Black Train Air Horn kit. This Horn system produces a High Powered Sound of 170 Decibels. Trumpets are chrome plated metal. Will replace your original horn, or can be installed as an auxiliary horn. Comes with a 5 gallon air tank, two (2) 12 volt 200 PSI heavy duty maintenance free 100% duty cycle air compressors, 1/2" Diameter Air Hose (for increased air flow that produces a louder sound), 1/2" Heavy Duty Electric Air Valve Solenoid. Includes Mounting Hardware, connecting brass fittings, Air gauge, 170/200 PSI Air Pressure Switch, Teflon tape sealer, installation instructions, Electric Wires, and Free Horn Button. Ideal for vehicles such as Trucks, RV's, SUV's, Pick-Ups, Boats, and many other applications. Overall horn dimensions: L 19 1/4" x W 18" x H 7.5". Trumpets length: 16-1/2", 14-1/2", 12-1/2". Air Compressor dimensions: 10-3/4" L x 4" W x 6-3/4" H. Air tan dimensions: 21" L, 10-1/2" H, including mounting bracket.