The Set Includes: You will receive 10 blank rings, the diameter is about 18mm, the width is 4mm-12mm, and the tray is about 10mm. The adjustable design can meet the size needs of most people's fingers. High Quality Material: Made of high-quality brass,sturdy and durable, not easy to break and fade, , comfortable to wear, long-lasting use. Natural Primary Color And Simple Design: The blank ring is not electroplated and keeps the original color of the brass material, which is very natural and environmentally friendly. At the same time, the most basic round flat ring design is adopted, which is simple and fashionable, and is very suitable for daily life. Wide Range Of Uses: You can stick all kinds of lovely 10mm charms, such as gemstones, crystals, onyx, emeralds, rhinestones, agate, cameos, etc., on the ring blank tray. Come and use your imagination to create creative rings! Perfect Gift: It is a good gift for friends, family and DIY jewelry making crafts at Christmas, Thanksgiving, graduation, wedding, Halloween, etc.