Woods 10644302 200' 4SOL Bare Copper, 4 Guarge

It's copper. Bright and shiny. No better or worse than could be bought locally, but a better value.

Good wire, exactly as advertised for a good price. I am using it to ground various ham radio antennas.

really good stuff I like it better than braided grounding wire because there is less area to corrode but this stuff is holding up great