I believe these are Elk Hair Caddis flies. Please check the images for details. Purchased on a net auction around 2014, they have been dead stock since. I will sell them to someone who needs them. Contents: #10 3 types, 9 flies total + extras #12 2 types, 6 flies each Case included *A guaranteed total of 15 flies. Extras are included to account for any discrepancies in quantity, so they may not be included. *4 used flies will also be included in the empty spaces. Will be shipped in simple packaging without cushioning material. No individual sales.