Dual Trumpet Horn Kit, Air, Length (In.) 7-1/2, Width (In.) 3, Height (In.) 3, Dia. (In.) 3, Material Plastic, Finish Unfinished, Universal Mount Mounting, Decibels (dB) 135 @ 1 meter, Pressure (PSI) 10 to 12, 16 Amps, Voltage 12 DC, For Use With Cars, Trucks, Vans, For Use On Fiberglass, Metal, Plastic, Rubber, Includes Compressor, Vinyl Tubing