Description: The air horn is made of high quality chrome-zinc plating material, which ensures durability and service life and can work in various temperature environments. Suitable for any 12V vehicles,Including cars, vehicle, trucks, van, SUV, motorcycles, yacht, trains etc. It can produce 150dB of strong sound, When you drive, no one will ignore the sound, making driving more safer. Stronger air pressure can be made of upgraded air compressor and larger coil, which can prompt the horn emit a louder and clearer sound. Horn kit includes air horn, air compressor, relay, hose and basic installation hardware, easy to install. Specification: Material: Chrome plated zinc Color: Black DB Output: 150db Voltage: 12V Size: Horn - 17.7x3.6x3.9inch, Compressor - 4.4x2.7inch Package Includes: 1 Set Single Trumpet Air Horn Kit Note: Please allow slightly difference due to manua l measurement. Color may be slightly different since different monitor. Thanks!