Comes with 5 trumpet 12V air horns Perfect replacement Plays the melody This horn sounds like used on the General from the of Hazzard movie. Fit for cars, trucks, busses, boats and any 12 volt vehicles Sound Pressure Level: 125db Trumpet Diameter: 3.3 inch / 3.1 inch / 3 inch / 3 inch / 2.8 inch Trumpet Lengths: 10.7 inch / 9.6 inch / 8.3 inch / 7.6 inch / 6.2 inch Material:Plastic, metal colour:Red , Silver Package Contents: 5 x small air horn 1 x air compressor 1 x trachea 1 x installation hardware 1 x 12V relay Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.