Feature●【High Quality Material】The train horn is made of high-quality zinc alloy materials to ensure maximum strength and durability. It can withstand harsh weather conditions or extreme temperatures with reliable quality and lifespan.●【Super-Loud Train Horn】The upgraded interior structure can produce more volume sound, blares out a loud and powerful warning. This 4 trumpet air horn is a good safety companion for driving.●【Easy Installation】Convenient to operate, connect the air connector on the solenoid valve to the vehicles air source to work. The horn kit includes basic mounting hardware.●【Wide Application】The truck horn kit works on any 12V/24V system vehicle with air source equipment, suitable for most cars, trains, trucks, SUVs, motorcycles, yachts, boats, off-road vehicles, buses, etc.●【After Sales】Customer first. If you have any questions, please contact us and we will continue to serve you until you are satisfied.Description