The HK9 is a disc horn of big size. The HK9 is developed and produced by F.I.A.M.M. S.p.A. for vehicles that needs high sound level and reliability. The HK9 is the ideal product for industrial applications such as forklifts, diggers and alarms. The aftermarket kit, supplied in FIAMM branded box, is completed by fixing material. The HK9 is produced for vehicles at 12V with two blades electrical connection.