Chrome Plated Zinc Alloy 4-Trumpet Train Air Horn Kit 150-178 DB Silver<br /><br />Universal fit for vehicle use air brake!<br /><br />Material: Zinc Alloy<br />Color: Silver<br />Quantity:1 pc<br />Voltage: 12V / 24V<br />Overall Dimensions: (13.75x7x7)"(LxWxH)<br />Trumpet Lengths: 12.9"，10.75"，8.38"，6"<br />     (not Including base height:1.7cm)<br />Trumpets Bell Width: 3.75"<br />DB output: 150-178 db<br />Max Pressure:100 PSI<br />Temperature Range：-55~60∪<br /><br />Feature:<br />-The train horns may be small， but they pack a punch that can rival any air horn out there. <br />-Easy to install，glistening chrome finishing and tuned train horn sound.There is no compressor in our package，you need a 150DB compressor to fit it!<br /><br />Package includes: <br />1 x 4-Trumpet Train Air Horn Kit (air compressor is not included)<br /><br />No wire instruction