Easy Installation: Twist the wine stopper downward and pull the handle downward while pressing the wine stopper. At this point, the silicone ring expands for the best seal. The lever doubles as an opener for removing metal bottle caps. For bottlenecks of 0.7-0.9 inches in diameter, the bottle stopper fits most bottles, but not all. Multiple Colors: The wine bottle caps come in 4 different colors, including black and white, red and black, yellow and white, and black, you can choose your favorite colors and apply them according to your mood No Leakage and FreshUse these bottle stoppers to store your wine bottles horizontally in the refrigerator or wine rack without worrying about leaks Safe Material: 4 fun and bright colors, the bottle vacuum sealer is made of non-toxic silicone, rubber, and stainless steel, the combination of steel and silicone makes it easy to use and clean. Wide Application: The bottle stoppers are suitable for most wine bottles, including most red and white wine bottles. You can also use them to preserve the flavor of everything from oil, beer, soda, champagne to mineral water. List Included: 6 x Wine Stoppers