Wolo (846 The Chief Sputtering Emergency Sound Horn Designed to produce the powerful Sputtering Sound that is used by fire trucks and emergency vehicles All metal construction, chrome plated throughout so to withstand the extremes in all weather conditions and to provide years of dependable service Will look great on any emergency vehicle Provided with the horn is a metal front pedestal support that is chrome plated The support will help to eliminate trumpet vibration at high speeds and on the roughest roads