The Wolo 415 features two (2) bright chrome plated metal trumpets that produce a sound that is sure to be heard. Ideal for the vehicle owner that wants chrome horns to dress up under the hood. Easy to install in any 12-volt vehicle. Airsplitter is also the horn of choice of motorcycle owners, it will make a great looking addition to any bike. So if you want a high powered sound, that is sure to be heard, then Airsplitter is the horn for you. Comes with a heavy-duty chrome plated compressor, 30-amp relay, hose and mounting hardware. Instructions in English / Spanish.