The opening of a standard, 750 ml wine bottle is 3/4 of an inch. If you have a wine bottle corker you will want to purchase either the size #8 or size #9 corks. It also depends on the type ofcorker you use. A hand corker readily handles #8. A floor corker would be better for inserting #9, but a twin handle corker can work.
|Cork Size||Storage Time||Suggested Tools||Bottle Size|
|#7||3 - 6 months||Twin Handle / Floor Corker / Hand||375ml (187ml preferred)|
|#8||1 - 2 years||Twin Handle / Floor Corker||375ml|
|#9||2 - 7 years||Twin Handle / Floor Corker||375ml|