SUNNYCLUE 80Pcs Ring Blanks Finger Rings Making Kit 40Pcs Ring Blank Base Pad Adjustable Ring Blanks Bezel Trays 40Pcs 12mm Glass Cabochons for DIY Cabochon Rings Jewelry Making Kits Adult Women

About 17mm(0.67in) in diameter as standard but can expand.

These rings are adjustable to fit most ring sizes, so you don't have to worry about stocking up on multiple sizes.

❤[CLEAR GLASS CABOCHONS]: Paste the lovely pattern in the tray, then cover with the clear glass cabochon, you also can add other cabochons, cameo, stamp, logos, resin, gemstones or some tiny beads into deep trays make gorgeous necklace jewelry.