These large jump rings are made from Stainless Steel. They are machine cut. They are 12 gauge - 5/8" ID. They were not made by me personally, but by someone else. I bought them to finish a project, and I had several left over. The first photo shows the 5 count, the second photo shows the 10 count. They can be used for any project that you might have in mind that requires a larger than usual jump ring. The rings are NOT shiny, so they would require tumbling if you want them to be bright. I have listed them in small quantities, because of their unusual size. I will be offering them in groups of 5 and 10. If you need more, please convo me. The coins in the photo's are not included, it just shows relative size of the jump rings.