The Outlaw Marine Chrome 232 train horn system was designed for trucks and large vehicles to bring them a loud train horn sound. This Chrome over Brass horn is a force to be reckoned with and the weather doesn't affect it! This kit includes the Outlaw 3000 horn and a speedy 2-gallon air system. This air system lets you honk for longer than smaller kits helping make sure you can honk when you want to, not when your compressor feels like getting up to pressure. The air system uses tried and tested components that are dependable and virtually maintenance free.