To the OP:
Since your clutch is sized for 6 to 10 mm, no worries with the 8. I'm making the assumption that the lines go through the clutches to a winch
, possibly self tailing
. If s/t, then no worries, otherwise, you may find the 8 mm a little small to get a good grip on--that depends on you own hands. I have small hands and it's okay. But I've seen some pretty big hands on some men
, and it may not work at all well for them. And that is why the advice to you will vary....or at least, part of why.