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Wapsi Ultra GSP Thread

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Ultra GSP is the strongest thread on the planet. Boasting steel-like strength for its weight, this thread really lets you put the pressure on! Our gel spun polyethylete is supple, ties flat and is available in the largest selection of sizes and colours.


Length: 50yds

Colours: 8 (not all available in all sizes)

50 denier GSP label

50 denier GSP is perfect for tying the smallest trout flies with a minimum of bulk.


100 denier GSP label

100 denier GSP has all around versatility for fresh and saltwater flies. It is an excellent thread for bonefish and permit fly patterns and our favorite pick for trout and smallmouth bass streamers.


200 denier GSP label 200 denier GSP is the best size for big deer hair work or when you really need to crank down.