Sealed Keep Wine Fresh: the mini wine sealer provides an air-tight seal, locks the gas in the bottle, to preserve the opened wine bottle. Wine bottle stoppers suitable for all regular red & white wine bottles with an inner diameter of 18-19mm. More convenient to use: the red wine saver corkscrew adopts a rotating design. It is convenient and fast to rotate the top counterclockwise to loosen, and clockwise to tighten. Light and clever design: silicone wine stopper the rounded arc design that fits the sparkling wine bottle is not only lightweight and weighs about 1.01 ounce, but also has 4 steel balls inside, which can clamp the bottleneck. After installation, even if it is tilted or lay in the level , it will not leak. Easy to Storage: the size of this wine bottle stopper is 1.53"(3.9 cm) * 1.59''(4 cm), which is small in size and easy to store. The round wine stopper shell is made of wear-resistant ABS material, which is easy to clean. The internal seal of the wine bottle stopper is made of food contact grade silicone material, which is safer. As a perfect gift: the 3 pack wine sealer fits standard wine, beer and soda bottles (note: suitable only for wine bottles with an inner diameter of 18-19mm). Suit for events, holidays and party, and makes a great gift .