This is a brand new set of RED High - Low Horns with Relay for your Street Rod Car. One horn has a high sound and one has a low sound, though they go off at the same time to give out a very loud noise. They will definitely get some attention at the Rod Runs/Cruises. These horns sound good and are an inexpensive way to pass your safety inspection. They are great for Cars, but would also be good for other late model vehicles. This is for the set (two horns) and includes the free 30/40 amp relay ($7.00 value).