The Fish-Skull is a weighted head that has a realistic baitfish profile and is specifically designed for tying freshwater and saltwater streamer fly patterns. Tie the fly first, leave room behind for the head, apply Zap-a-Gap, slide head on over eye of hook, wrap a head of thread in front of head to jam it into place. 3D eyes included with every pack. Small size - 10 per pack, small/medium size - 8 per pack, medium size - 8 per pack.