HornBlasters 5 Chime Train Horn is made out of Cast Aluminum with Stainless Steel Diaphragms and Bolts. This Cast Aluminum Train Horn produces the loudness and intense sound of a real Locomotive Horn. This Horn comes Powder coated Black and is backed bUse 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.