Package information: Bottle stoppers are reliable in quality and sufficient in quantity to easily meet your daily and replacement needs. They are suitable for various occasions and can be shared with others. Practical bottle stoppers: These resealable wine pump vacuum stoppers are designed for use with wine vacuum pumps (pumps not included). When used with a vacuum pump, they effectively remove air from bottles, allowing wine to be stored and preserved. Applicable occasions: These reusable wine saver vacuum stoppers are suitable for home use, as well as restaurants, hotels, cafes, and bars. The included quantity meets your immediate needs. Easy to use: Insert the wine stopper into the bottle mouth and use a vacuum pump to remove air from the bottle until you hear a click, indicating the bottle has been successfully sealed. This simple process saves time and effort. Strong adaptability: These black vacuum wine stoppers are standard size and fit most wine bottles, including red and white wine. They are practical and reliable without concerns about compatibility. Color: Black Material: Silicone Size: 4.2 x 3.3 cm Package Contents: 24 x Wine stoppers Note: Light and display differences may cause slight variations in color between the image and the actual item. Measurement allows an error of +/- 1-3 cm.