Can get as many of these as people want. 4300k, 6000k, 8000k, 10000k and 12000k ranges
They use Xenon Beam for both low and High beam, basically have a mechanically mobing reflector which moves as you change the beam from hi to low and vice versa.
These are great kits. Cost a bit more than the other kits I was getting but are worth it IMO.
£140 + £9.95 postage. comes with everythign you need to fit them.
I can also get Bi Xenons but they are £180 + postage, they use 4 ballasts though so are not so good in an evo engine bay with little room lol.