Gordon Griffiths Sheer Wisp Thread 14/0 100yds
This is a fantastic dry fly and nymph thread for going right down to 24's. I use it for all my river dries from 16's-24's and for my nymphs very fine and very strong. I can even tie a size 24 klinkhammer with it with full post.
My Favourite thread of all and smaller spools also