Feature: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 fresh or salt water environment .4. Durable Material: Made of zinc alloy chromeplated, can work in a variety of temperature environments. Gas tank with stainless steel extends the sound of the horn, protect ears. Tough and longlasting, no oxidation.5. Stylish Appearance: Zinc alloy doublepipe horn, stainless steel gas tank, highquality 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 hornMaterial: Zinc alloy chrome platingHorn diameter: Approx. 90mm/ 3.54inLength: Approx. 400mm/ 15.75inWidth: Approx. 170mm/ 6.69inHeight: Approx. 110mm/ 4.33inWorking Voltage: DC 12V/24VWorking Current: 4.0ASound Level: 300dBOperating Air Pressure: 0.5Mpa-0.8Mpa (air system required)Application: Designed for any 12V 24V vehicles, trucks, SUVs, RVs, boats, motorcycles, etc. in fresh or salt water environments..Package List:1 x Air Horn1 x Rubber Tube1 x Gasket4 x Screw4 x Nut2 x Gas Nozzle