You are looking at a brand new package of Tandy Leathercraft Synthetic Crystal Rivets. This item 1366-04 is a package of 10 jewelry quality crystal rivets. They are 10mm in size. They can be easily set with Tandy's Synthetic Rivet Setter Kit 3462-00 that is also found in our store stecksstore. These rivets add a great western fashion flare to leather belts, buckles, garments and handbags. They can be used on leathers as heavy as 8 to 9 ounces. If you are interested in additional quantities or other items, please feel free to contact us. Please feel free to message with any questions. Thank you for looking.