SUPER LOUD 4 TRUMPET TRAIN HORN - Includes 4 intense sounding metal trumpets, a 150 PSI compressor, and a 0.5 GAL tank. The trumpets' STACKED design delivers the most intense blast for maximal impact. Check the images for a sound clip video COMPACT ONBOARD AIR COMPRESSOR SYSTEM - This full train air horn kit includes a 150 PSI compressor and a Half Gallon air tank made of steel, designed for installation on vehicles were space is limited. This effective reliable compact system ensures the horns will be ready to blow whenever you need them THERMAL OVERLOAD PROTECTION & WEATHER RESISTANT - The compressor is equipped with safety protection to prevent overheating. Trumpets are made of premium quality zinc alloy coated in black color paint for an additional layer of protection, tough enough to withstand any weather condition EASY TO INSTALL - Clear instructions are provided for a quick, clean and simple setup right out of the box. Complete mounting hardware, 6-ft hose, fuse, thread sealant, fittings, horn button and clear instructions are included PREMIUM QUALITY & BEST VALUE FOR MONEY - This horn kit was designed to ensure it lasts many years with daily use. A 1-year warranty is provided for all its parts. We strived to keep it affordable compared to the exceptional quality 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: Trumpets: 13-¾" L, 11-½" L, 9-¼" L, 7-¾" L x 3-¾" D Overall: 14" L x 6-¾" W x 6-½" H Air Compressor 150 PSI Air Compressor 12V Permanent Magnetic Motor Maximum Working Pressure: 150 PSI Duty Cycle: 25% @ 100 PSI Amperage Draw: 18A Flow Rate: 1.1CFM @ 0 PSI Automatic Reset Thermal Overload Protector ¼" NPT Stainless Steel Braided Leader Hose Built-in Intake Filter Insulated Wiring with Connectors 30A In-line Fuse with Waterproof Holder Mounting Hardware Included Dimensions: 7" L x 3-¼" W x 5-¾" H Air Tank 0.5 Gallon Air Tank Kit Capacity: 0.5 Gallon (2 Liter) Pressure Rating: 150 PSI, max 180 PSI 5 Ports: 5 x ¼" NPT Anti-Corrosion Coating Precision Welded Included with this kit: 0.5 Gallon Air Tank 240 PSI Air Pressure Gauge 90-115 PSI Pressure Switch Horn Button ¼" NPT Wing Style Drain Valve ¼" NPT Compression Fitting for ¼" OD Air Line ¼" OD Nylon Plastic Hose (6 Feet) 12mm Thread Sealant Tape (16 Feet) Mounting Hardware Dimensions: 5-½" L x 7-½" H x 6" Dia