Kleinn Air Horns 225 Black Dual ABS Horn provides an alternating high/low dual tone that is sure to turn heads and remind others of a classic European sound. Made from high impact ABS with trumpet sizes of 15 inches and 9.75 inches. It features dual solenoids and a switching relay that make the horn tone oscillate

• Two Separate Mounting Air Horns – 10.5-Inches and 15.5-Inches
• Requires 150-PSI Onboard Air System (Not Included)
• Black High Impact ABS Train Horn Trumpets
• (2) ‘Vortex 4’ 12-Volt Electronic Air Horn Solenoids Included
• Up To 154.2 Decibel Output