Clear plastic coin tubes for U.S. Dimes - Each tube holds a standard roll of Dimes (without the wrapper) - Unbreakable plastic screw on cap - Air tight lock for permanent security - The round tubes are made of crystal clear polystyrene - Polystyrene is an inert plastic and safe when in contact with coins Dimensions - Diameter 3/4 - Height 2 5/8 Can also be used to hold other small items such as buttons, sewing supplies, hardware, fishing tackle, jewelry making supplies, beads, small cosmetic items, matches, and more.