This is motorcycle spark plug, vary model spark plug optional. High quality spark plug for motorcycles: multi-ribbed insulator eliminates flashover, 95%pure alumina insulator.
Advantages: Strong resistance to heat and shock, great mechanic and electronic features, superb insulation, nickel plated housing prevents oxidation and corrosion, heat crimping process ensures absolute air-tight fit, inner sealing with conductive glass ensures a fine conductivity and seal,multi-layer gaskets are strong and reliable, copper core electrode prevents oxidation and corrosion, good electricity and hear conductivity, long service life.