This is the wire to tie Brassies. In fact the size is called BR (Brassie). This wire also ties Copper John's, Copper Caddis Pupas and makes good ribbing on many small and medium size nymphs.
Non-tarnishing copper wire used for ribbing, weight, flash, wire bodies and dubbing brushes. Brassie size is larger than small size wire, and is perfect for Brassies size 18-22.