What is this wheel called and any pics shown on a A4 B6?

[RobMorris]

https://www.google.co.uk/search?q=8P0601025BL&hl=en&safe=off&tbm=isch&tbo=u&source=univ&sa=X&ei=zudCUb_JH-SR0QWVmIGABg&sqi=2&ved=0CC0QsAQ&biw=1440&bih=805

Cheers!