1. Super Loud : Super loud 300DB sound. The sound could spread a far distance, please do not use it near school or hospital.     2. Double Tube: The double tube horn is designed for customers looking for a loud and affordable air horn. It is enough for everyday use.     3. Wide Application: Designed for exterior mounting on any 12V 24V vehicles, trucks, SUVs, RVs and boats motorcycles etc. in a or salt water environment .     4. Durable Material: Made of zinc alloy chrome& 8209;plated, can work in a variety of temperature environments. Gas tank with stainless steel extends the sound of the horn, protect ears. Tough and long& 8209;lasting, no oxidation.     5. Stylish Appearance: Zinc alloy double& 8209;pipe horn, stainless steel gas tank, high& 8209;quality solenoid valve, aluminum alloy base, lustrous and different appearance, stylish silver, showing you something different.     6. Easy Installation: The air horn is easy to install, it is flexible and portable so it has the reflexes to take from one car to another easily.         Specification: Item Type: Air horn     Material: Zinc alloy chrome plating     Horn diameter: Approx. 90mm/ 3.54in     Length: Approx. 400mm/ 15.75in     Width: Approx. 170mm/ 6.69in     Height: Approx. 110mm/ 4.33in     Working Voltage: DC 12V/24V     Working Current: 4.0A     Sound Level: 300dB     Operating Air Pressure: 0.5Mpa-0.8Mpa (air system required)     Application: Designed for any 12V 24V vehicles, trucks, SUVs, RVs, boats, motorcycles, etc. in or salt water environments.              Package List:     1 x Air Horn     1 x Rubber Tube     1 x Gasket     4 x Screw     4 x Nut     2 x Gas Nozzle