BCW 4 Round Coin Storage Tubes with Screw Caps - Penny - Nickel - Dime & Quarter Air tight lock for permanent security -The round tubes are made of crystal clear polystyrene. Coin Safe! Each tube holds a standard roll of each coin size - Unbreakable plastic screw on cap Penny tube: 19.05mm in diameter Depth: 77.1mm - Nickel Tube: 21.21mm in diamater Depth: 79.1mm Dime Tube: 17.9mm in diamater Depth: 65.9mm - Quarter Tube: 24.26mm in diamater Depth: 71.4mm