Wapsi's "UTC Ultra Wire is a non-tarnishing copper base wire with a wide range of colors and sizes.  It's used for ribbing and full body flies such as the Brassie and Copper John Nymph.

Wrapping two colors and sizes together can create a beautiful segmented body.

Use Extra Small for size 20 or smaller midges, Brassie on size 18 to 22, Medium on 8 to 12, and Large on large stonefly nymphs to streamers.

I combine shipping costs but eBay no longer processes it. If multiple shipping cost appears at checkout I will refund the extra cost. If you're not comfortable checking out you can request an invoice and I'll prepare one for you. This process will take longer to complete the transaction.

I sold my fly shop and have lots of fly tying material and tools taking up needed room in my house. I'm committed to sell even if I take a loss. If you find these at a lower price, including shipping, I'll beat it.

Sizes are: 

Large = 26 gauge, .5mm, 0.0180"" 

Medium = 28 gauge, .3mm, 0.0126"

Brassie = 32 gauge, .2mm, 0.0080"

Small = 34 gauge, 0.0063"

Extra Small = 38 gauge, .1mm, 0.0040" 

Ref: 5210UTC