Consists of a pair of 6000k H4 HID bulbs, ballasts (E4 certified - just like the Hella and Phillips ballasts - these are the brightest lights you can buy. The ballasts produce more light than any other HID conversion kit and are even brighter than the factory fit Xenon headlights! Over 300% more light than your existing halogen bulbs!) and all the required wiring. This set up features a motorised bulb up that "dips" the beam in fractions of a second, so the brightness remains constant. Just replaces your existing H4 bulbs. Please note that due to the length of the bulb, these do not fit the new diamond Morrette lenses, only the early concave Cibie type. These are also covered by a 2 year warranty. DELIVERY excluded.