This 5 chime train horn kit brings loud to a whole new level. It features our brand new heavy duty 5 chime, the Katrina horn! This horn was designed from the ground up to be the loudest of its class. Paired with this heavy duty 5 gallon air supply, you get up to 10 seconds of insane horn blasting power, a fast refill time, and a reliable onboard air system for yourair tool and inflation needs!