BLACK - DANVILLE 6/0 Flymaster Fly Tying Thread (Waxed 70 Denier)
This is a very popular item, and probably Danville's best selling thread size.
It's smaller size is suitable for small Dry Flies & Nymphs. Used by experienced fly tyers far and wide.
If you have just started tying flies, you may get frustrated trying to use this size.
(Try Flymaster Plus 140 till you get the 'touch')