... & save fuel & PowerMulti-ribbed insulator eliminates flash over95% pure aluminum insulatorStrong resistance to heat and shockGreat mechanic and electronic ... /Warranty Auto iridium type: 60,000-80,000km (99.5% pure iridium )Auto standard type(Cu-Ni): 20,000-40,000kmMotorcycle ... iridium type: 30,000-50,000km (99.5% pure iridium )Motorcycle standard type(Cu-Ni): 20,000-30,000km ...