(20) Edgar Marcus Brand Round Clear Plastic (Half Dollars) Size Coin Storage Tube Holders with Screw on Lid This offering is for a lot of (20) NEW Half Dollar Round Coin Storage Tubes Measurements: Edgar Marcus Coin Tube is 30.1mm (1-3/16") Diameter and 46.3mm (1-3/4") Length Holds a Standard Roll of 20 US Half Dollars without the wrapper. Designed to hold 30mm coins