MagiDeal Blank Square Bezel Tray Base for 20 mm Cabochon Necklace Pendant Pack Of 10 Color: Vintage Bronze Material: Brass Total Size: Approx. 32 x 23 x 6 mm Blank bezel inner diameter: Approx 20.2 x 20.2 mm / 0.8 x 0.8 inch, bezel depth: Approx. 3.5 mm Bail Hole size: Approx 4.5 mm / 0.17 inch