Koito D5S bi-xenon projectors
These are unique bi-xenon projectors that are used with D5S xenon bulbs which do not require any xenon ballasts. It is the last modern trend in xenon technology where some manufactures introduced a special lighting standard with slightly smaller lumens intensity ~2000Lm ( in the contrast to usual 3200Lm of orhter xenon types) in headlights. This standard allows not to use a specail automatic levelling systems for the lighting angle control and without headlight whashing system. But this lighting intencisy is still enoght ( and it is very good that a human eye can even notice) to have good lighting conditions on roads. Additionally D5S xenon bulbs do not require any xenon ballasts.
So, if to get D5S xenon bulbs for a good price, then together with such bi-xenon projectors it will be possible to make a good modern project for a lighting upgrade.
They are produced by Koito. The diameter of the lenses is 3 inches. They are for D5S xenon bulbs. The price is for a pair.