WBSEos Wine Saver Preserver Pump with 2 Vacuum Bottle Stoppers Principle: Remove air from your wine bottle to create an airtight seal that preserves wine after the bottle has been opened. Protects from bacterial and oxidation processes, keep wine with natural fresh smell and taste up to 14-15 days. WINE PUMP - Easy Simple to Use: 1. Put the smaller side of the black wine bottle stopper into the bottle mouth; 2. Place the Pump on the Top of the Stopper; 3. Pumping the air out until air resistance is detectable. then it's done. Premium Quality: The unique Wine Saver Vacuum Pump is made of sturdy strong stainless steel which is more strong and better quality than fragile plastic wine saver pumps. And all of the food grade vacuum wine stopper are Reusable. No More Leaks: Seals Your Wine Bottles Airtight Without Any Worry of Leaks, Even When Placed Sideways. No More Wrestling with Swollen Corks, or Searching for a Perfect Spot to Store the Wine, Just Pop on the Reusable Stopper, Pump out the Air, and Store the Open Bottle on Its Side, on the Fridge Door, etc. WINE PUMP - Air Tight Seal - Extracts Air From Opened Bottles to Stop the Oxidation Process and KEEP WINE FRESH and TASTY as at the beginning. Dishwasher Safe - Easy to Clean - Easy to Use - Vacuums