I've got 2 pairs of FK Hubcentric Adapters/Spacers (one 15mm pair & one 20mm pair).
They come with the required bolts etc.
Change 5x100 to 5x112 so older VAG cars can run a wider range of wheels.
I had these on my S3 8L and they gave then car a much better stance with my OZ wheels...
They're £90 a pair of eBay, I'll sell both sets for £120 delivered.