Our biggest train horn kit! The Demon™ Model 730’s massive & detachable XCR 2.0™ spun steel trumpets (18.25”, 14.75”, 10.5”) allow tons of installation options. Includes a high output 150 psi, 100% duty compressor, 5 gallon tank and tire inflation kit with storage bag. Can power your horns as well as other accessories like air bags and small air tools. -For the clinically insane among you, the 730 can be upgraded by adding an Ultra BlastMaster™ valve upgrade (P/N 6890) – making it the loudest, largest and most aggressive train horn on the market.