This item is from the estate of a prolific fly fisher and tyer from Pennsylvania. His flies are well tied and these appear to be from size 10 for the Wooly Buggers to 16 or so for the Royal Elk Hair Caddis. The Myran Fly Box is a premium fly fishing accessory made in Sweden. It comes with a selection of high-quality Wooly Buggers and Terrestrial/Attractor Flies, perfect for any fly fishing enthusiast. This product is designed specifically for fly fishing and is a must-have for anyone looking to enhance their fishing experience. Made by a reputable brand, Myran, you can trust in the quality and craftsmanship of this fly box.