Adjustable Ring Base Blank -- The standard size is about 15.9mm in inner diameter, tray: 0.12"(3mm), the ring can be expanded or lessened on the basis of your finger and are adjustable to fit most ring sizes, so you don't have to worry about the inappropriate size. Quality Material -- Made of premium brass to ensure long-time usage. It is plated with long-lasting golden color and cut with advanced laser technology, which gives it exquisite appearance, smooth edge and high accuracy, not easy to break or tarnish, thus can be used for a long time. Widely Used -- Our claw finger ring settings are perfect to DIY unique rings, cameo pendants, resin ornaments, crafts, custom jewelry and many other uses. They can also be treated as a birthday, Christmas, Halloween, Valentine's Day, Mother's Day gift to your mom, close friends, daughter, etc. Unlock Your Creativity -- Coming with 4 pcs claw ring trays, which can be combined with gemstones, cabochons, cameos, stamps, engravings, glue letters, logos, resin, or some small beads to create gorgeous rings or jewelry. It's time to show your DIY talent. Great Handmade Gifts -- Create an exclusive handmade ring for the people you love, parents, lover, girlfriend, wife, fiancee, mother, daughter, close friend, brothers etc. to express your love to them, or as a treat for yourself.