A new hybrid GSP thread that is virtually unbreakable. The strongest fly tying thread available on the market. Not only for small flies, but for ALL types. Now you can easily tie any fly with no build up. Imagine spinning deer hair using a 12/0 thread. Tiny midges from 16 to 32 using the 18/0. You will be amazed.
12/0 Breaking Strength: 20 oz.