The Mother Trucker Air Horn is a practical and reliable product designed to enhance your vehicle's sound system. With a horn length of 29 inches, width of 8.75 inches, and height of 4.75 inches, it fits most makes and models. This air horn operates at a maximum working pressure and is sold individually. Upgrade your vehicle's sound with the Mother Trucker Air Horn, a versatile and high-quality addition to any vehicle.