The Compact Universal Direct Drive Compressor Replacement Air Horn is a chrome-plated, compact air horn designed for tight engine compartments or motorcycles. With a pressure range of 10-12 psi, it produces a powerful sound. Measuring 4-1/2" x 2-1/4", it works with 2 or 3 trumpet air horns and is suitable for direct drive systems. Easy to install with the included bolt, this air horn fits most makes and models. Its compact size and universal compatibility make it a practical choice for those seeking a reliable and efficient replacement air horn.