Hella Compressed Air Trumpet Horn 12VThe CA30 Series Chrome Single Air Horn sets the standard for a Super loud, high penetrating power tone, visually appealing package. This air horn makes an unmistakable presence on the road, ideal for drivers who require maximum sound penetration in heavy traffic conditions. The chrome finish provides a corrosion resistant surface and adds a touch of elegance to your vehicle's exterior. Easy to install and built to perform, the CA30 Series is perfect