Please note: This does NOT comprise a full conversion kit, only the ballasts without the bulbs. Kensun HID Xenon bulbs in all sizes may be purchased separately for completion of the kit or you may purchase from us a complete Kensun kit (please see our other products, visit our Kensun Store Front or contact our Customer Service team for more details). These slim digital ballasts are of a sturdy, superior quality, and have been laboratory-tested extensively.