The SM 9162 is a professional-grade Supertone Disc-type horn set, engineered for drivers who require maximum sound projection and a rugged, industrial aesthetic. Known for their "piercing" and authoritative tone, these Supertone horns utilize a specialized diaphragm and a reinforced front grille to produce a high-decibel warning signal that cuts through extreme ambient noise, heavy rain, and high-speed wind resistance.