UTC Ultra GSP Thread 200 Denier / Red

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.

Wapsi UTC Ultra Thread - FlyMasters of Indianapolis

UTC G.S.P. 100 Denier Threads Ultra Strong in 50 Yard Reels – D.FORBES FLYTYING MATERIALS

Fly Tying Thread, Construction, & Materials - Fly Fisherman

Going Fishing - Fly Tying - Thread/Wire/Tinsel Inventory

KEVLAR THREAD - FR Systems International, Kevlar Thread

UTC Ultra GSP 200 Denier – Togens Fly Shop

WellieSTR 6 Color roll 50D GSP Fly Tying polyethylene uni Thread Ultra Strong 12/0 Fly Tying Thread for Small Flies Nymphs Trout Fishing Lures : : Sports, Fitness & Outdoors

Fly Tying Thread & Wire

GSP Thread – Fly Fish Food

UTC Ultra Thread 210 Denier Red : Sports & Outdoors

Thread – Eggman Flies & Supplies