Crystal Antron Chenille: Blending translucent Tri- Lobal fibers with a hint of Pearlescent Mirror Flash, Cascade's new chenille could revolutionize the use of standard chenille. Extremely durable and can be heated to form tapered worm patterns and flat bodied nymphs. Tying simple egg patterns to Crystal Wooly Buggers have never been easier. Sizes: 2 mm, 4 mm and a special 6 mm.