Guardhouse Direct Fit Round Holders are made of a virgin styrene acrylic polymer that is free of all oils and contaminants. The quality of the material ensures long term crystal clear clarity. Coin is held snugly in a sealed chamber, but the capsules are also designed so that they can be opened if needed. Interior; 24.3mm, Depth; 5.09mm, Exterior 31.05mm. Packed 10 pieces per box. Holds Quarters (Bust, Liberty Seated, Liberty Head, Standing Liberty And Washington) or coins of same size.