16 Oz/22 Mil (.0216") 24 gauge Copper Coil Bulk Rolls. Alloy 110 (99.9% cu) Smooth Commercial Finish/Annealed (Dead Soft). 16 Ounce is often referred to as "roofing copper" as it is the preferred thickness for many roofing and flashing projects. It is also often used for various arts and craft projects, DIY projects, electrical applications, Research and Development and much more! 16 ounce copper can be bent and formed by hand but is durable. Metals snips are needed to cut this thickness. See our Thickness Guide for help determining the proper thickness for your project. Please don't hesitate to contact us via email at email@example.com, phone (252-261-2677), or try our "live chat" feature for immediate assistance!