Package information: Bottle stoppers are made of quality materials and are sufficient in quantity to easily meet your daily use 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 (pump not included). When used with a vacuum pump, they help remove air from bottles, allowing wine to be stored longer. Applicable occasions: These reusable wine saver vacuum stoppers are suitable for home use as well as restaurants, hotels, cafes, and shopping malls. The included quantity meets multiple usage needs. Easy to use: Insert the wine stopper into the bottle mouth and attach the vacuum pump. Remove air from the bottle until you hear a click, indicating the bottle is sealed. Simple and time-saving operation. Strong adaptability: These black vacuum wine stoppers are standard size and fit most wine bottles, including red and white wine bottles. They are practical solutions without concerns about size compatibility. Color: Black Material: Silica Size: 4.2 x 3.3 cm Package Contents: 24 x Wine corks The package includes only the items listed above; all other items are not included. Note: Lighting and display differences may cause slight color variations between the image and the actual item. Measurement error is +/- 1-3 cm.