FIAMM 66045 Ultimate Blast The FIAMM Ultimate Blast is three times louder than the standard O.E. horn! Compact design makes this horn perfect for motorcycles passenger cars and trucks! Anywhere that large trumpets cannot be installed, easily install this horn. The FIAMM Ultimate Blast emits one high and low tone sound at the same time The FIAMM specially designed maintenance free compressor is attached to the horn for "one location" mounting FIAMM horn package Includes: Horn, relay and mounting screw for easy installation FIAMM two terminal horn, 12 volt,135 dB (Max amp draw 20)