High pressure roof mount air horn powered by an on-board air system;Produces an ultra-powerful, big rig alerting sound, controlled by a 12-volt heavy-duty manual lanyard valve;The horns base is painted black enamel and both trumpets have a bright chrome finish, which will dress up any vehicle big or small;Installation is made easy with Wolo's new flexible inlet hose, with brass fittings, that is hidden from view;Included is a two piece on-board high pressure air system consisting of a 2-1/2 liter steel air storage tank, with a built-in pressure switch and a heavy-duty high-pressure compressor

• Wolo (815) Challenger EV Roof Mount Air Horn - Maunal Lanyard Valve Operated
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Wolo (815) Challenger EV Roof Mount Air Horn - Maunal Lanyard Valve OperatedWolo