The coin holder can hold a 30mm diameter coin, or hold a 27mm diameter coin using the soft rings.According to the size of your medals, choose whether or not the pad rings is used A special rings that can be loaded with commemoratives medals or medals.Coin holder is make of acrylics materials, high transparency, scratch resistance, and This keychain is a way to display your collection.Also suit for business gifts, exhibitions, awards ceremony A 26mm inner diameter soft rings is specially designed to matching any 27mm diameter medals Seal well, medals can fit very tightly and be hard to remove once inserted, good protections of the medals to prevents oxidation.Protect medals suit for securely storage and displaying your medals