harmless to coins, high hardness, not easy to damage, detailed process brings high parency, smooth corner technology, intimate design is more convenient, coin capsule MEASUREMENTS (DIAMETER x DEPTH): Clear round coin holder diameter is 30 mm, can hold not bigger than 30 mm coins, commemorative coins, perfect for zodiac commemorative coins or other coins under 30 mm in diameter and ancient coins suit for holding most kinds of coins. Depending on the size of your coin, choose to use different sizes of foam gaskets to separate the foam ring from the Eva foam pad COIN CAPSULE ORGANIZER: The lid and base are firmly engaged together. It has dust and oxidation resistance. The coin box can be used as a coin protector and is specially designed for coin collection. It is a wise choice for coin collectors Protect Gasket with Storage Organizer Box for Coin Collection Supplies Type: Capsules Coin Capsules Quantity: 100 pieces colour: parent color Material:PS size:Foam gaskets diameter: 19/20 / 22.25 / 25/27 / 30mm Coin Capsules Size: . 30 mm Plastic Storage Box Size: . 185 * 120 * 38mm Package Contents: 100 x Coin Capsules 100 x Eva Gasket 1 x Plastic Storage Box Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.