Have the most unique sound on the road with the Dolphin horn. The specially engineered middle chamber creates a repetitive sound to give this horn a different but attention-grabbing sound. The Dolphin horns come in a beautiful finish and is ready to accept large half-inch airline.Use this product in a safe and responsible manner, at a distance of at least 100 feet from others.Proper Hearing protection must be worn when using this air horn. Hearing loss or permanent damage may result from unsafe use.Never operate this product in a closed environment or close to pedestrians or others.It is the consumer's responsibility to comply with local noise ordinances and D.O.T. sound level laws.