The Kleinn HK6 ProBlaster Triple Train Horn Kit features three tuned, chrome-plated high-impact ABS trumpets measuring 16, 14, and 11 inches in length, delivering a genuine train horn sound so intense you will swear you are standing right on the tracks. Engineered for maximum durability and an unmistakable presence, this complete package includes a powerful 150 PSI waterproof air compressor, a 1.5-gallon steel air tank internally coated with Cortec for superior corrosion resistance, and all the necessary hardware, solenoids, and wiring parts required for a complete installation.