formula disc brakes includes rotors £25

[daj]

I had a set of these once they date 1998 the fronts are fine but as noted the rears are out unless you own a early Italian disc frame (fitted my sintesi)

Still have a front wheel and loads of nos discs even front brake somewhere

 

[suburbanreuben]

Great - thanks for all the info

They really are so well made and a lovely finish- not sales pitch as judging by my above advert thats not my forte

I would say that's 51mm! Instead of using the end of the measure, centre the 10cm marker on the middle of the bolt. I think you'll find it's more accurate.