Set of four,5x112,66.6cb 19”x8.5 et 35
Taken off my A5 come with turbo bolts and extended turbo bolts.10mm and 15mm spacers if you want to space them off
Great used condition all straight no buckles or scrapes.
If you have access to heat that would release it,as Rob said make a dam round it and pour vinegar in it and leave to soak......all that failing drill it out.
I wouldn’t re-tap it,epoxy a new bolt/threaded bar ingood luck