Item Type: Blank Rings_x000D_ Material: Stainless Steel_x000D_ Base Diameter: Approx. 10mm / 0.40in(The Size is Measured Manually, There May Be Small Deviation)_x000D_ Specification: 20 Pieces/Pack_x000D_ Usage: DIY Jewelry Accessories 1There are 20 pieces of flat rings bases in the package, which is enough for you to satisfy your daily needs about jewelry making. 2Made of high?quality stainless steel, these blanks are durable, which ensure you to use them for a long time. 3These rings are adjustable and fit most rings sizes, so you don't need to worry about wearing them inappropriately. 4The diameter of these blank rings is about 10mm,which is very suitable for bonding buttons, beads or anything else to create unique rings. 5Suitable for family jewelry making and hobbies, to provide you with more DIY craft project options, or as a gift to family or friends.20 x BlankRings