Semperfli has some unique colors of wire that make great wire bodies or ribbing on your favorite flies. This .2mm diameter wire is close to UTC's
Semperfli Wire 0.2mm - Blue Ribbon Flies
Semperfli Wire 0.2mm - Blue Ribbon Flies
Thread, Yarn & Wire - Wire & Weight - The African Fly Angler
Semperfli 0.3mm Wire
Semperfli 0.1mm Wire - Brown
John Gooderham — Blog — Panfish On The Fly
Sybai Copper Wire (0.1mm and 0.2mm) – Tactical Fly Fisher
This is a very good wire from Sybai for all your fly tying wire needs. The 0.1mm is very fine and is best for small nymphs/dries and under resin. The
Sybai Copper Wire (0.1mm and 0.2mm)
Thread/Wire/Floss – Page 2 – Tactical Fly Fisher