Mellow, deep, and insanely loud. These are just three ways to describe this kit. In fact this train horn kit provides the most popular freight train horn of the 60s, the AirChime P5, paired with a reliable, fast-filling 5 gallon air system. The construction of these horns includes rubber gaskets to help prevent wear and tear on the diaphragm through use. These horns will provide years and years of service with the least servicing of any railway horns. If you want loud and like the sound of deep horns, this is the kit for you!