About this item Super Loud: The loud air horn is capable of emitting super loud and deep-sounding blast with the help of its 12 liter/3.1 US gallon air tank. 5 trumpets of varying length produce a combined tone of varied frequencies, sure to be heard from a distance and get everyones attention. Material :Made of high quality chrome, zinc plated material to ensure maximum strength and durability for long lasting using.Designed to be weather resistant for withstanding any weather and form of elements of blizzard. Easy to Install:It's flexible and portable, so you can easy to move from one car to another. The horn kit includes basic mounting hardware, hose, and relay, you don't need to worry about buying hardware or relays for installation.