which bolts for my wheels please!?

So I've bought a set of Teledials and I've got the spacers and bolts to attach them to the hub, but I'm wondering which bolts to use to stick the wheels on. Here's what I know so far…

The rear spacers are FK 25ml with 12ml hole diameter, a friend is certain these will take Mk4 Golf domed bolts.

The front spacers are steel 20ml (not sure on make) I think the holes are 10ml in diameter, but im not totally certain. Does anyone know which bolts to use on these?

All help gratefully received!

Thanks

Tom