Wolo's new horn THE CHIEF® has been designed to produce the powerful sputtering sound that is used by fire trucks and emergency vehicles. The triple chrome plated brass trumpet will look great on any emergency vehicle. Comes with a chrome plated metal front pedestal to eliminate vibration at high speeds and while driving on rough roads. Installation is made easy with Wolo's flexible inlet hose. THE CHIEF requires an on-board air system (recommended Wolo on-board air system is Model 840). Designed to provide years of dependable service.