This is a brand new set of two BMW E46 (3 Series 1999 - 2006) HID Adaptors.
BMW E46 that came with halogen lights from factory, uses H7 halogen lights with special adaptors.
Therefore, installing a H7 HID kit without these adaptors, would not be possible.
These adaptors allow you to use H7 HID kit on your H7 halogen headlight housings without modification, by holding the H7 HID bulb in its place to provide correct lighitng output and beam pattern.
Please see the pictures below, to get more deail information.
** Please note that the HID bulb shown on the picture below, is not included with this listing.