Copper Sheet 10 Mil (.010 inches thick) 30 Gauge ThickThese are HighQuality Pure Copper Sheets for Crafts and Art Projects, Embossing, Manufacturing, Electrical Appliions including RF Shielding, Research and Development, Do It Yourself Projects, and Much More! Copper Alloy 110 (% pure copper!) Smooth Commercial Finish/Annealed (Dead Soft and Very Malleable) and manufactured to .