Air Horn Quad Trumpet Train Air Horn (Black) Metal Construction 12V Electric Air Valve (Solenoid) with Compression Fitting ¼" OD Nylon Plastic Hose (6 Feet) Mounting Hardware Included Dimensions: Overall: 12-¼" L x 13-¾" W x 4-½" H Trumpets: 13-¾" L, 11-½" L, 9" L, 7-½" L x 3-¾" D On-board System 1 Gallon Air Tank with 150 PSI Air Compressor Max Pressure: 150 PSI Power Input: DC 12V Tank Capacity: 1 Gallon 0-150 PSI Pressure Gauge 90 ON / 115 OFF PSI Pressure Switch 30A In-line Fuse with Waterproof Holder 3 Feet 3/8" Air Hose ¼" NPT "L" Type Fitting for 3/8" Air Hose Brass Drain Nut Designed for any high-pressure air horns that require on-board air system Thermal Overload Protection (Will automatically shut off when air compressor goes over 176F and restart when it cool down to 158F) Anti-Corrosion Coating Precision Welded Mounting Hardware Included Dimensions: 15-¾" L x 6" W x 8" H