HornBlasters | Part Number: H/BHK-S4-544K Included:Horns & Compressor with Tank Tank Volume:5 Gallon Number of Horns:4 Horns Universal / Direct Fit:Universal PRODUCT OVERVIEW Powerful, insanely loud, and entirely in black: the Conductor's Special 544 Nightmare Edition train horn kit delivers the performance you need in the style you crave. The Conductor's Special 544 features the insanely loud, American-made, Shocker Horns. These horns are ridiculous and, more importantly, actually sound like a train! They are hand-tuned in the USA to the government mandated train signal chord. Simply put, they sound completely authentic.