The latest in air horn technology, one-piece design, that requires no hoses. Installs in minutes by simply transferring the factory horn wires to the compressor. Mounts with one bolt (included). Produces a powerful dual tone air horn sound that is louder than the factory horn. The Bad Boy is compact in size to fit any car, truck, motorcycle and any 12-volt vehicle that wants a loud air horn sound. Heavy-duty maintenance-free compressor provides years of dependable service.