Gill Flies Cock Hackle Bug (Pink) Set of 6 Hook: Maruto c47 #20 (Upturned eye, barbless) Material: Chinese Cock Neck Hackle (Pink) Thread: Spyder Thread 18/0 Red Suitable for gills, and with a size 20 hook, also for Japanese dace. Occasionally, black bass will also take it. Handmade using natural materials, so there may be variations. Thank you for your understanding. Fly Fishing Tenkara