Copper Foil Bulk Rolls 1 Mil (.001 inches) Thick Copper Alloy 110 (99.9% CU) Smooth Commercial Finish/Annealed (Dead Soft and Very Malleable) and manufactured to ASTM-B152 specifications with a thickness tolerance of +/- 5%. These are High Quality Premium Copper Rolls for Crafts and Art Projects, Embossing, Manufacturing, Electrical Applications including RF Shielding, Research and Development, Do It Yourself Projects, and Much More! 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 shape with paper punchers. See our Thickness Guide for help determining the proper thickness for your project and a video description of this thickness. Please don't hesitate to contact us via phone at 252-491-2812, email at firstname.lastname@example.org or try our "live chat" feature for immediate assistance!