ADJUSTABLE FINGER RING: Adjustable ring base comfortably fits adult finger sizes no worry about too tightly or too loose on your fingers easy wear and easy take off.QUANTITY: Comes with 20sets making kits 20pcs pad ring bases(tray: 18mm; 17mm inner diameter) 20pcs glass cabochons(17.5~18x5mm) enough for your spare or replacement.CABOCHON SETTING: The finger ring blank base can be used with cabochon dome or anything else to create unique rings. Great DIY accessories for home jewelry making and hobbies.DIY CRAFT GIFTS: Ideal gifts for Christmas Valentines Day Anniversary Day and Birthday to your girlfriend daughter wife sister and mom to express your sincere love.STAINLESS STEEL MATERIAL: Provides good stability high work performance and durability and resistance to corrosion in comparison to other metal alloy poses no health risk need low maintenance and ideal for long-lasting jewelry designs.