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