6 different sizes 600pcs of coin holder can hold most coins on the market, such as penny, dime,nickel, quarter, half dollar, small dollar, large dollar.These coin flips are of good quality so they are highly used in the process of coin collection and are the first choice of coin collectors. Because the year, size, texture and other characteristics of coins can be marked on these coin collection supplies, the transparent plastic film of the 2x2 coin holders has a slight fold, which retains the thickness of the coins and will not tear. these coin holders for collectors can also be used with pocket loose leaf and put into coin album or coin book, which makes it more convenient to browse and consult your coin collection. There are 100 pieces of coin flips of each size, and the coin flips of each size are packaged independently, and the size of the corresponding coin collection supplies is printed on each independent package. When collecting coins, it is not necessary to open the package to quickly find the coin holder matching the coin size, and it plays a dust-proof role in protecting the coin flipping paper clip, Because the coin holder that has been exposed to the outside for a long time is easy to absorb dust and turn yellow, even if not so many coin flips can be used at one time, the remaining coin flips can be put into the independent packaging of corresponding size to prevent the coin holder from absorbing dust and turning yellow. I hope our coin collection can accompany your beloved coins to have a good time together--- Boen always wants to give you a better coin collection experience!