Mr DTM Calib as ever, spot on.
I'll just add / reiterate what the guy at the scrappy told me to tell you (he used to work in Vx garage)
Make sure you
fit everything 'dry first' so don't go tightening everything up 'done' then turn the ignition on, only to find the airbag warning light is on, for example. (fear not, you
won't have your head blown off if something's wrong, it just saves you hassle) (So wheel 'sat on' with no nut fitted, let airbag sit in by gravity, etc.. )
Once this is done, whether using the original from your car, or the 'new' one,
check the radio controls work - it's a 99.9% bet that if they're not working, then you've got a damaged ribbon, and therefore an airbag that won't deploy. In which case, replace/swap the ring over.
When everything's working as it should,
then tighten everything. Fairly important you remember this step

Sounds silly - but get the wheel in the same place as it was before, very easy to get it 1 spline out.
Basically the 'ring' I included was literally to give you the freedom of choice. Use that, or the original (and therefore guaranteed working) from your car. But as they're a bit delicate, with a fairly fragile ribbon inside, I though might as well chuck it in.
NB: The above was told me by the scrappy man, and not 'from me' so if anything's incorrect, I reserve the right to play the ''I'm only saying wot he told me'' card

Personally, I'd test both, then sell either tested working ring on OOF, and get some money back from the extortionate price I charged you

Also piccies of it when fitted and a coat of leather feed/damp cloth wiped over, please!