The Challenger Roof Mount Air Horn is a practical and reliable addition to your vehicle. With a powerful 125 decibel sound, it ensures you'll be heard on the road. The all-metal construction, chromed trumpets, and enamel painted base guarantee durability and a sleek appearance. Easy to install with the included stainless steel bolts, this air horn fits most makes and models. Operating at a pressure of 80 to 110 psi, it requires an on-board air system. With its compact size and hose fitting of 1/4 inch, this air horn is a practical choice for any vehicle.