Cerrowire 050-2200A 25 Foot 6 Gauge Solid Copper Wire This is an excellent pure copper wire for wiring to ground stakes or for other purposes - Copper will not rust, although plaque forms over time Virtually immune to corrosion - Copper is much easier to bend and shape than harder metals like steel. Using a vise, pliers, or other tools, this 6-gauge wire is easily bent into any shape you want.