Check the listing for details. UTC Ultra Wire BRASSIE. Condition: New. Listed at 2.99 USD. Wapsi UTC Ultra wire is a non-tarnishing copper-based wire used for ribbing, weight, flash, dubbing brush wire, and as a body component on nymph and streamer patterns. It is the essential material needed for tying John Barr’s famous Copper John Nymph. Flies can be tied completely out of Ultra Wire if you desire. Wrapping two different colors of Ultra Wire together can make a banded, segmented body. Ultra Wire is available in up to 30 colors and 5 sizes. XS: is the size to choose for ribbing on size 20 or smaller. Small: is an all-purpose size capable of filling many fly tying needs. Brassie: is an ideal choice for wire-bodied flies sizes 18-22 and for ribbing on most trout-sized flies. Medium: is a good choice for ribbing on size 8-12 nymphs. Large: is a popular choice for streamers and/or large stonefly nymph patterns.