One of the best synthetic materials around. Can be used in a variety of ways on musky flies. Tie it in as a tail, body or head section to bring your fly to life. Steve Farrar's SF Blend is a mix of Slinky Fibre and Slinky Angel Hair. Bleeding colors have a flash of red, dark blue, and green depending upon the color. Steve Farrar SF Blend is about 10 inches long and naturally tapered for easy formation of minnow bodies.