HS Chrome Silver Extremely Loud Blast Euroblast 12V Volt Twin Air Horn for Motorcycle Car SUV Truck Universal (Made in Italy) 139db + MADE IN ITALY originally designed for the motorcycle police force in Italy. Super Loud! Over 139 dB air horn. Brand New in the Box-Includes Relay & Install Instructions. Will fit any motorcycle, car, truck, or SUV with a 12V electrical system. Mounts with one bolt included in kit and produces a powerful dual tone air horn sound One-piece design requires no hoses and installs in minutes by simply transferring the factory horn wires to the compressor