HELLA 003001651 2-Trumpet 12V Air Horn Kit Hella's ultra-reliable Twin-Tone Air horns look and sound like nothing else on the road. These horns guarantee the attention needed in critical situations as they add a level of safety to your driving with 118db(A) of sound. Two Red Trumpet Style Air Horns with included Air Compressor for a distinctive and stylish look. HELLA horns guarantee best functionality, optimum fit and long lasting customer satisfaction. Original equipment quality horns you can trust from a global leader in automotive technologies for more than 100 years One horn is 6.4" and the other 8.3" long. They come with an ECE approval. High tone: 840 Hz - Low tone: 780 Hz - Sound level: 118 dB(A) - Voltage / Amps: 12Volts/5Amps Application: UNIVERSAL; Kit includes one high-tone Air Horn, one low-tone Air Horn, one High-Performance air compressor, one 12V relay, mounting brackets and mounting instructions