It contains single red plastic trumpet and electric valve.
14-18 PSI Replacement Horn Air Compressor 24V for Air Horn Car/ Truck / Vehicle
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12V / 24V Twin Air Horn Chrome Plated Trumpet For Truck Lorry Bus Boat Train
# Air Horn Trumpet 130dB 12V 24V for Truck Lorry MAN Scania DAF Volvo Mercedes
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Car Truck Diesel Air Horns 12V / 24V Dual Trumpet Horn Kit Compressor Twin Tone
