Ultra Wire Medium is a nice all around wire that can be used for Copper Johns, larger brassies, stoneflies, and other nymphs in the 8-14 size range. This is also a good wire size for streamers and buggers. Wire diameter is 0.0135″, equivalent to 28 gauge.
Ultra Wire is the hottest item in fly tying! A fine-gauge coated copper wire, this material is perfect for tying midges and nymphs of all types. Ultra Wire has changed fly tying as innovative patterns like the Copper John appear, using colored wire as a primary body material.