hid xenon lamps(9004/9007 H/L) 1)A+grade quality, 2)competive price, 3)optional color, 4)convenient installation ... hid xenon lamps(9004/9007 H/L)1)A+grade quality,2)competive price,3)optional color,4)convenient installation ... : Blue red20000k: Pink30000k: PurpleHow to chooseDifferent lamp apply to different auto models, If you are not clear which type to use ...