Adjustable Ring Base Blank -- The standard size is about 17.3mm in inner diameter, which can be expanded or lessened on the basis of your finger. Tray: 10x8mm. These rings 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 platinum color and cut with advanced technology, which gives it exquisite appearance, smooth edge and high accuracy, not easy to deform or rust, thus can be used for a long time.Beautiful Finger Ring -- You can wear these ring blanks directly or use them to DIY your own jewelry accessories, the unique claw design is also a fashion element that will make your overall look charming, elegant and beautiful.DIY Ring Making -- You can add gemstones, cabochons, cameos, stamps, engravings, glue letters, logos, resin, or some small beads to the ring tray to create gorgeous rings or jewelry.Meaningful Gift -- Jewelry is the perfect holiday gift for a sensual surprise. Make a unique jewelry gift for your loved one, lover, girlfriend, wife, sisters, mother, daughter, friend, or even yourself with the claw ring base.