Gel Spun 200 Denier GSP
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200 Denier Gel Spun is the strongest thread on the market - this is our go-to thread for spinning big deer hair bass bugs, and for any fly that needs serious thread pressure. Bulletproof!
Ultra GSP is the strongest fly tying thread on the planet. Boasting a steel like strength for its weight, this thread really lets you put the pressure on! Our gel spun polyethylene is supple, ties flat and is available in the largest selection of sizes and colors. Choose 50 denier GSP for tying small trout flies with a minimum of bulk. GSP 75 and 100 have all around versatility for fresh and saltwater flies. GSP 200 is the size to choose for big deer hair work or when you really need to crank down!
UTC GSP 200 Denier approximate breaking strength 16 Pounds!