INDUSTRIAL SERIES 370 DISC HORN 12 VOLT 385 HZ O.E. UNIVERSAL DISC HORN AVAILABLE IN 12 24 36 & 48 VOLT 2 TERMINAL SCREW TYPEEASILY FITS INDUSTRIAL EQUIPMENT MOTORCYCLES CARS AND TRUCKS. PAINTED STEEL CONSTRUCTION ASSURES LONG LIFE IN ALL WEATHER ENVIRONMENTS AND HAS AN ATTRACTIVE FRONT PLASTIC GRILL. EASILY INSTALLS IN ANY ONE (1) OR TWO (2) WIRE SYSTEM. ALL STEEL CONSTRUCTION PAINTED BLACK ENAMEL FINISH. THE DIAMETER IS 96 MM. COMES WITH STRONG ZINC PLATED 90 DEGREE MOUNTING BRACKET. WARNING: This product can expose you to chemicals including lead which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65warnings.ca.gov -