Kevlar Tying Thread

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.

UTC Ultra GSP Thread 200 Denier / Red

Royal Sissi 4spools Natural Yellow Kevlar Fiber Flat Fly Tying Thread 200d Super Strong Big Fly Thread For Bass&saltwater Flies - Fishing Lures - AliExpress

H&H Tying Threads

KEVLAR NAT.YELLOW 200denier Bob Marriott's

Veevus Poly-para-Phenylene Terephthalamide Tying Thread : Sports & Outdoors

Kevlar tying thread

Kevlar Tying Thread - Nordisk Fiskeutstyr

Bulk Fly Tying Materials [23]

Fly Tying Thread, Cobweb, Uni, Benecchi, Big Fly, Mylar, Maxi Packs

Dupont® KEVLAR® Thread, Regular Size, but Twice the Strength Great for Fly Tying, Shoe and Boot Repair and Toys for Fire Play