Black annealed wire is made of heavy duty 9 gauge steel wire. Sold in 100 lbs. coils, also available in 50 lb. coils. Our wire coils are made of dead-soft annealed wire - pliable, yet tough; easy to twist, but hard to break. Some of the many industries presently using the Black Annealed ties are: Construction, Pre-Cast and Pre-Stressed, Bagging and Bundling, Foundries, Carpet & Textile, Fencing, Paper and packaging.