Nano Silk Ultra is ideal for flies sizes 18 and smaller. It is regarded as the tying thread choice of professional fly tyers world wide. Being that it is super strong, available in a variety of colors and deniers, it has endless possibilities and can be used for everything from micro to medium flies. It is virtually unbreakable and still capable of being split down for dubbing twists. There is no fly tying thread as strong as Nano Silk anywhere.
With Nano Silk you will have confidence that even the smallest of flies can be tied without your thread breaking!
-Breaking Strains 1,140gm / 2.51 lb strongest in test
-Recommended hook size guide #16-#32