This copper strip is 30 gauge/10 mil (.010 inches) thick and one inch wide by twenty feet long. It is manufactured to ASTM-B152 specifications, is annealed (dead soft and very malleable) with a smooth commercial finish, and is 99.9% pure copper Alloy 110 (Certificate of Conformance available upon request). 10 mil copper can be used for various outdoor /garden projects-e.g., capping fence posts, pier pilings and exposed beams to protect the wood from weather. It can also be used for various craft and art projects, do it yourself and construction projects, electrical applications, manufacturing, and much more! Basic Copper's superior packaging provides maximum protection during shipment. If you are unsure of which thickness is right for your project, check out our Thickness Guide. If you have any questions, please don't hesitate to contact us via phone at 252-491-2812, via email at email@example.com or through our "live chat" and we will be happy to discuss your project!