This now sets the industry standard in tying egg flies. It is much easier to use than egg yarn as it is wound on a narrow core allowing it to be wrapped around the hook easily. it is an extremely fine fiber and when wet giving it the feel of cotton wool almost slushy. When fished it creates a halo effect on its outer edges. The standard Egg-it is approximately 10mm. Since its inception it has also been used in tying blobs, fabs and boobies not to mention snakes and worms.