Hemingway's 12 color/set copper wires are made from a super quality single strand non-tarnishing copper-based ultra wire, used for ribbing, weight, flash, dubbing brush wire, and as well as a body component on nymphs, streamers, and other flies. Flies can be tied completely out of our Ultra Wire, or wrap two different colors together for banded, segmented bodies. Tie on and tie off with thread. Rather than cutting, simply wiggle and it will break saving damage to your scissors. Hemingway's Ultra Wires are the hottest wires in fly tying and come in 2-size package, each size in 12 great colors.