... 2.loud sound, strong penetrability 3. copper coil wire 4. universal type motorcycle horn, auto disc horn, electronic auto ... car horn, alarming horn, electric horn, disc hornModel No.: HLL-D09Specifications:1.Loud voice, strong penetrability 2.Tungsten contacts, heat resistant, ... horn can both for 12V & 24V, Strong and pleasant sound.2. Top quality, strong and reliable, coil wire material, copper. ...