Description: Made of high quality 450g thick cardboard , thick and hard. 12 sizes of cardboard coin holders for your selection to fit almost all kinds of coins. Place the coin in a plastic page, fold, and seal with staples or tape to make your coin collecting book. Provide a perfect soluction to organize, display and protect your coins. Thickness: Approx. 0.58mm Specification: Color: White Diameter: Approx. 17.5MM / 0.68 inch 20.5MM / 0.8 inch 23.0MM / 0.9 inch 25.0MM / 0.98 inch 26.5MM / 1.04 inch 27.5MM / 1.08 inch 29.0MM / 1.14 inch 31.5MM / 1.24 inch 33.0MM / 1.29 inch 35.0MM / 1.37 inch 37.0MM / 1.45 inch 40.0MM / 1.57 inch (Optional) Package Includes: 50 Pieces Cardboard Coin Holder Note: 1.Please allow a slight difference between the size above and the actual item due to manual measurement. 2.Due to the difference between different monitors, there could be a little color difference acceptable, please kindly note.