Harris' State Quarters Coin Tubes (Mfr. #1690, ISBN #0-7948-0763-1) is a set of 5 coin tubes for holding quarter-sized coins. Each tube is made of clear plastic, with a screw on top, making the coins visible and secure in their holders. Each tube is designed to hold 40 coins, and the packaging includes information on the 50 state commemorative quarters. A safe and easy way to store large collections.