Looking for a horn to match the size of your Hummer? Our Triple Air Horn by Hella will give you a full sound your Hummer deserves.  These Hella air-horns are characterized by their strong, penetrating, and concentrated sound. Horns are constructed with durability in mind as impact resistant plastic is used for air horns and galvanized metal is used for disc horns. All horns kits come with horns, compressor with air filter, relay, mounting brackets and installation instructions.