F3517 Largatun X-Strong 150 Denier Thread
Over the last year this has become one of our favorite fly tying threads. If you have used Lagartun tinsels, (and you should try them if you haven’t, you won’t go back to the cheap stuff), you know how strong the polyester core is. The strongest polyester thread for its denier. Lies very flat, with little build up, so it ties smaller than its denier would indicate. 150 Denier.