Copper Foil Sheets and Rolls 1 Mil (.001 inches) Thick-These are High-Quality Pure Copper Sheets for Crafts and Art Projects, Embossing, Manufacturing, Electrical Applications including RF Shielding, Research and Development, Do It Yourself Projects, and Much More! Copper Alloy 110 (99.9% pure copper!) Smooth Commercial Finish/Annealed (Dead Soft and Very Malleable) and manufactured to ASTM-B152 specifications with a thickness tolerance of +/- 5%. Available in widths of 6", 12", and 18." This is very thin copper foil. It is approximately 1.5 times thicker than typical household aluminum foil and is easy to cut but also easy to wrinkle. You can tear 1 mil with your hands or punch out various shapes with paper punchers.