Brand New, Black 4 Trumpet Train Air Horn And Compressor/Tank kit. This Horn system produces a Loud Sound of 149 decibels. Trumpets are in black color metal. Will replace your original horn, or can be installed as an auxiliary horn. Includes a 1.5 gallon air tank, 12 volt 150 PSI heavy duty maintenance free air compressor. Mounting Hardware, Brass Fittings, 1/4" Air Hose, Electric Air Valve Solenoid, 0-to-240 PSI Air Gauge, 120/150 PSI Air Pressure Switch, Teflon Tape Sealer, and installation instructions. Ideal for vehicles such as Truck, RV, SUV, Pick-Up, Boat, and many more applications. Air compressor dimensions: 7" L x 3-1/4" W x 5-3/4" H. Air tank dimensions: 17" L, 7-1/2" H, 5-1/2" diameter. Air horn trumpet sizes: 13-3/4", 11-1/2", 9-1/4", 7-3/4" with 3-3/4" diameter each.