7 Colors: Silver, platinum, red copper, gold, rose gold, antique bronze and light gold color, 2pcs each color, 14pcs totally, more colors and quantity can offer you more DIY craft projects choices. Adjustable Ring Base Blank: 17.9mm in inner diameter as standard but can expand. These rings are adjustable to fit most ring sizes, so you don't have to worry stocking up on multiple sizes. Ring Blanks Tray: 12mm in diameter, Ideal for gluing on buttons, beads or anything else to create unique rings. Great DIY accessories for home jewellery making and hobbies. Easy to Use: Paste the lovely pattern with the clear glass cabochon, then cover the glass cabochons on the ring pendant tray, and then the unique finger ring is finished. Ready for Ring Making: You also can add other cabochons, cameo, stamp, engrave, glue letters, logos, resin, gemstones photos or some tiny beads into deep trays make gorgeous necklace jewelry.