BEADALON-Stainless Steel Wrapping Wire. tThis specially tempered wire IS Made of Type 316L Stainless Steel and has a different feel than other half-hard materials such as Goldfilled or Sterling Silver, however it is a great alternative and is stronger. This material is perfect for teaching classes and practice, ideal for all types of wire-wrapping, weight-bearing designs and holding designs together. Stainless Steel is harder and will work harden faster than other wires. Available in a variety of gauges in each shape: half-round and square. Half Round: 20ga: 29.5ft/9m, 21ga: 39.3ft/12m and 22ga: 49.2ft/15m. Square: 20ga: 9.8ft/3m, 21ga: 14.8ft/4.5m, 22ga: 21.3ft/6.5m and 24ga 32.8ft/10m. Made in USA.