The Silver Streak DD Train Horn is a practical and reliable product that delivers a powerful sound. With a 12-volt direct drive compressor, it produces a loud 119 decibels at a frequency of 376-383 Hz in the low range. The horn features an all-metal base with black painted enamel and chrome-plated trumpets, ensuring durability and a sleek appearance. Measuring 14-1/2" x 7" x 5", it fits most makes and models. The package includes all necessary parts for installation, such as a heavy-duty compressor, 30 amp relay, hose, flexible inlet hose, mounting hardware, and rubber gasket.