Although it depends on what are you going to use the custom coins for Smaller than 1″. Are used as tokens, or pendants. Between 1″ and 2″. Used for Wedding Gifts and other giveaways. Gift coins will be the talk of the party. From 2″ to 2.5″. Work great for Military Units, and Corporate Awards. An award coin will be greatly received. 2.5″ and Larger. Make a big impact on Years of Service Awards.