Wolo 837 Cannon Ball Express Triple Trumpet Horn
When a truck owner demands a powerful sound, the Cannon Ball Express is the horn and gives any truck a true train horn sound. All three trumpets are constructed of all metal with brass triple chrome plating and a painted metal base. The Cannon Ball Express requires an on-board air system with a minimum of 3 gallon storage tank (such as the Wolo on-board air system Model 840). Built with heavy-duty 12 volt electric solenoid. The kit comes with all mounting hardware and 10 feet of 1/4” Nylon high-pressure hose.