The Mother Trucker 127H Air Horn Kit is a must-have for any vehicle owner looking to upgrade their horn system. This kit includes the powerful Mother Trucker Air Horn and a reliable 275C Air Compressor, ensuring a loud and attention-grabbing sound. With an operating pressure of 120 PSI and a restart pressure of 90 PSI, this kit is designed for maximum performance. The 12 Volt DC voltage and 18 AMP maximum amperage make it suitable for most makes and models. With dimensions that fit most vehicles, this kit is a practical and effective choice for anyone in need of a louder, more attention-grabbing horn.