Hi Raiderhunter,

As can be seen, the 140 is roughly equivalent to Unithread 6/0, and thus about twice as heavy as Danville's 6/0 and Unithread 8/0 (the Danville's 6/0 and Unithread 8/0 are roughly equivalent.)

I use Unithread 6/0 for all #10 flies and larger, but only tie down to #4s or so, but once in a great while down to #2s, so your 140 should be good for those. Part of the time I also use it on #12s, but part of the time use Unithread 8/0 or Danville's 6/0 on #12s.

The 210 might be good for deer hair spinning, and for large body flies.

Regards,

Gandolf