Nano Silk Thread 18/0

This makes me a better tier. It's remarkably strong (stronger than UTC 70 denier), but the 18/0 size means it adds very little bulk, allowing me to tie cleaner flies. Yes, I could get better with thread control and build my skills to avoid crowding the eye of a hook, but this helps you avoid crowding eyes simply by being ultra thin and ultra strong. When you're finishing off a fussy dry, emerger, or unweighted nymph that has multiple materials around the thorax, such as hackle, cdc, wing cases, etc, this thread makes all the difference in tying a clean fly.

I have used this on streamers and big foam flies too, often just because I didn't want to change the thread on the bobbin. It still works great.

You can make it work on deer/elk hair if you're careful, in the context of wings on grasshoppers or elk hair caddis type wings. It'll break if you crank too hard, but it still works. Wouldn't be my thread of choice if I was tying streamers with deer hair collars and spun heads.

only downside to this is that it isn't really optimized for making thread bodies on nymphs/dries. it adds so little bulk that in order to get a good thread body, you'd have to use a ton of thread. It isn't terrible for making a smooth tapered underbody on a nymph with lead wire wraps, but yeah, not ideal for thread bodies.

Awesome product. Super strong thread with no buildup of of excess thread. Simply the best for all those of flies.

This thread is super fine, doesn't stack, and is stupid strong. Strongest thread out there for it's size. Nothing better to finish dries with, especially small ones. Once you start using this thread on flies (especially smaller ones) you'll never go back. You can also split this down the middle as you tie and then twist it making your own dubbing loop without actually making a dubbing loop. Couple things to watch out for, it doesn't knot as well as others so whip finish a few times, but don't worry about excessive build up. Second thing is it's so strong for it's size the smaller sizes will cut through foam if you pull hard.