Coin boxes 5 different specifications, including 20mm, 25mm, 30mm, 35mm and 40mm. The foam ring can be easily separated according to the actual size of the coin to avoid slipping and scratching. These coin holders silver dollar coin holders are made of transparent acrylic and elastic sponge materials, which are sturdy and durable. Each coin display box has a moon opening on the outer edge, allowing you to easily open and access your coins. The coin box is suitable for a variety of purposes, including storage, display and exchange of coins. Perfect for award ceremonies, business gifts, exhibitions, and great for coin collectors and enthusiasts You will receive 20 coin snap holders with adjustable sponge rings, allowing you to find the best fit for most coin types.