Over 450 10 inch long fibers. This flash is the widest width readily available (1/32 inch). We use this flash for everything from the bodies of tiny perdigones to tails of our Flashtail Clouser and in all of our big musky and pike patterns. Same width as Flashabou Magnum but cut to shorter lengths (also available in 20 inch length soon) Available in holographic and a Holo sheen.