Packaging Includes: Contains 8pcs adjustable stainless steel blank tray rings in rainbow color, exquisite style, suitable for handicraft ring production, design different styles of rings. Size Detail: These ring setting are about 1mm wide, 17.9mm inner diameter, round: 12mm, tray: 10mm, and the glass cabochons are about 9.5~10x3.5mm, tray: 10mm. High Material: The adjustable cabochon ring settings are made of high quality stainless steel, good stability when worn as jewelry, not easy to deform and change color, and is more durable. RING BEZEL: The finger ring base blank can be used with buttons, beads, cabochon dome or anything else to meet your DIY ring needs. Great DIY accessories for home jewellery making and hobbies. Commemorative Gift: Each custom-made ring is full of a beautiful feeling. It is a unique gift for yourself, friends and relatives. The processing and design of DIY makes this ring even more unique.