Semperfli Nano Silk 50 Denier 12/0
Nano Silk is regarded as the tying thread of choice by professional fly tyers world wide. It is super strong and has has endless possibilities when using it on micro to medium sized flies. Virtually unbreakable and still capable of being split for dubbing twists. Nano Silk will give you the confidence to tie even the smallest of flies. Breaking strains 1,9000gm / 4.2lb test. Recommended hook size guide #8-#18.