Wolo (836) Silver Streak DD Roof Mount Dual Trumpet Air Horn with Direct Drive Compressor Perfect addition to any 12-volt vehicle Designed with an air chamber between the trumpets that will produce a powerful echo sound that replicates a locomotive All metal construction throughout so to withstand the extremes in all weather conditions and to provide years of dependable service The horns base is painted black enamel and both trumpets and air chamber have a bright chrome finish, which will dress up any vehicle big or small Installation is made easy with Wolos new flexible inlet hose with brass fittings that is hidden from view