Semperfli Predator Fibers have an incredible number of uses with excellent sheen and a great color range to match your baitfish and streamer patterns. However they are not limited to large flies, Predator Fibres Silver Bait Fish work equally well as parachute posts, underwings on dry flies or even dubbed as fly bodies.. Predator Fibers are similar to EP Fibers developed by Ernst Puglisi but lower cost! Predator Fibers will disperse water easily from the high quality synthetic hair and will still retain its shape. Each pack of Predator Fibres contain strands 20\" (500mm) overall length folded in 2.