Thank you for viewing. This is a set of 3 copper cups with the EPON COPPER (Epson Copper) engraving. These are used items and have many scratches and marks. (They appear to be old.) Please check the condition in the photos. Material: As engraved, they are made of pure copper. Usage: Similar engraved products include cocktail cups (tumblers). Copper products have very high thermal conductivity, so they are often used as vessels for enjoying cold drinks. (Quoted.) How about chilling them and using them for beer? I will sell them to someone who is looking for them. Shipping is planned via Yu-Packet Plus. (Management No. 5221)