MaterialChromed Brass Trumpets with Stainless Steel BracketsSize18″ long x 13-1/2″ wide x 13-3/4″ highFeaturesOperating range from 70 PSI to 140 PSI and upMulti-voltage 12V/24VInstallationRequires 1/4″ O.D. hoseUnit & PackageSold by each, color display boxPart No.Description69991Heavy duty chrome train horn with