Equivalent to four bottles of champagne, or 3.2 litres (6.75 pints). The full list is: Magnum (2), Jeroboam (4), Rehoboam (6), Methuselah (8), Salmanazar (12), Balthazar (16) and Nebuchadnezzar (20). For Bordeaux this is equivalent to 6.67 bottles, or 5 litres.