According to SEMPERFLI, "Fly tying wires are used in all disciplines of fly fishing, however the market offerings were inconsistant with amount per spool, colours and often they would go rusty after several uses. Due to this we turned our focus onto wires and improving the fly tyers experience."

This a brassie fly tying wire, non tarnishing and perfect for your heavy nymphs, brassies, copper johns, streamers, sea trout, predator and salmon flies as bodies, ribs or thoraxes. Measuring 0.3mm or 0.012 inch diameter the non tarnishing means it can even be used in saltwater. 

Length in Meters  10
Actual Spool Length M  10m
Actual Spool Length Yds  10 yds
Width mm  0.3mm
Width In  0.012 inch
Product Delivery Package  Spool
Materials Weight gm  0.009
Materials Weight oz  0.32
SPS-EDI-Category  Fly Tying Wire