Abundant Quantity: You will receive 16pcs adjustable square blank ring bases in 2 colors and 16pcs glass cabochons, adequate for you to use and replace in daily life, providing you with more DIY handcraft projects choices. Adjustable Size: the adjustable blank ring about 17mm inner diameter, tray: about 25mm inner wide, 25mm inner long, the rings can be adjusted easily to fit most finger sizes, comfortable to wear, so you don't have to stock multiple sizes rings. Simple to use: You can inlay lovely pattern or various kinds of decorations such as resin, dry petal, pearl, crystal, cameo, gemstones, tiny beads, etc., on the ring trays, to make your jewelry gorgeous. High Quality Material: These adjustable finger rings are made of brass material, not easy to rust and fade, lightweight, durable and sturdy, not easy to deform, and can be used for a long time. Ideal Gift: Blank ring for DIY Crafts, easy to make your own unique ring jewelry and give them as an ideal gift for a lover, wife, fiancee, mother, daughter, friend, or even yourself on birthdays, graduation, Christmas, Thanksgiving, Mothers Day, Fathers Day, Valentine's Day.