When a truck owner wants the powerful sound of a truck train horn, go no further, midnight express is the horn to choose. Produces an ultra powerful train horn sound that will be heard the three (3) metal trumpets, Electric solenoid and heavy-duty mount base bracket are constructed of metal that is painted semi-gloss Black to look great on any vehicle. Comes with mounting hardware and 10 feet of 1/4 inch O.D. Nylon high-pressure hose.