About this project 4-Pack of Vacuum Wine CorksThese vacuum pump preservation corks are not just for wine. They fit most cork or screw cap bottles. Use them to preserve the taste of everything from oils, beer, champagne to mineral water. Package includes: 4-pack of vacuum wine stoppers Keep wine fresh for 1 week Very simple and efficient to use. Insert the cork into the bottle and pull the air out until the rod pops up. This slows down the oxidation process, keeping the wine fresh for up to a week in an easy way. A Great Gift for Wine LoversSuitable for various occasions, such as dates, daily drinking, family gatherings and business dinners. An ideal gift for weddings, Christmas, anniversaries, birthdays or any wine lover. Safe to UseThe lever is made of plastic, and the seal is made of food-safe silicone, so it is safe to use on the bottle neck. Eco-friendlyDishwasher safe and reusable. Size: 31*90mm, suitable for 15-20mm red wine bottle mouth