BCW 2x2 Coin Snaps - Half Dollar Size - Box of 25 2x2 Coin Snap Holder for premium display or long- term storage of coins - Made of inert polystyrene will not harm coins Insert with Black foam on one side and White Paper on the other - 100% Archival Plastic. No PVC! 2- Piece Snap Together Design - Stackable Overall: 2 x 2 x .25