Brake bleeders are M7x1.0 and smaller than the clutch. I've measured the hex as 10mm and the minor of the threads up near the head (possibly/likely the shoulder) as 9.43mm. I'm guessing M10x1.0 based on some really rough measurements but wanted more than a guess before buying a handful of speedbleeders (ie "I think" is not good enough, which is why I asked).
Thanks!