[Sealed Keep Wine Fresh]: Wine bottle stoppers suitable for all regular red & white wine bottles with an inner diameter of 18-19mm.Wine stopper fully sealed,100% non-leakage,preserve freshness up to ten days [Easy to Use]: The 1 pack wine protector and bottle opener adopts a rotary design. Rotate the top counterclockwise to loosen it and rotate the top clockwise to tighten it, which is convenient and fast. [Mini Size for Easy Storage]: The size of this wine bottle stopper is 1.38"(3.5 cm) * 1.49''(3.8 cm). 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. [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. [Widely used]: The wine bottle stopper, with its fashionable and simple appearance and exquisite design, makes it a great gift. Our wine bottle stopper is suitable for almost all 750 ml red and white wine bottles, and it is suitable for use during events, holidays and parties.