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Q:How much psi does the compressor shoot out? would it work on larger horns?
A:This Wolo Trumpet Big Rig (Part No. 417) is a air powered horn that produces a powerful Big Rig Truck Sound. Two (2) durable red plastic trumpets that are easy to install in any vehicle. Heavy duty chrome plated compact compressor that is maintenance free. Kit contains relay, hose and all mounting hardware. The heavy duty 12 volt chrome compressor is compact in size. 120 Decibels 410/440 Hz. Longest Trumpet 12-1/4 in. For further assistance, please feel free to call us at 1-877-238-2623 or visit your nearest Advance Auto Parts store and one of our representatives would be more than happy to assist you.