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Quantity
1
Description
Ultra Thread's slim, round, multifilament build lays flat instead of stacking bulk, so matching denier to the hook is what matters most: 70D for size 14 and smaller, 140D for sizes 6–14, and 210D for streamers and big saltwater flies. Speci...
Reviews
4.9
55 ratings
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My favorite thread
I use 70 denier ultra thread for most of my tying. Small size does not bulk up flies and strong enough for most flies. Highly recommend this thread.
A
Arthur · June 9, 2026
My goto thread
I've picked one up in every color... it helps me figure out colors when ordering items that don't have a visual representation. I do enjoy using it as a primary go-to tying thread as well.