Package information: Bottle stoppers included are sufficient for daily use and replacement needs. 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 ideal for home use, as well as restaurants, hotels, cafes, or shopping malls. The quantity provided meets multiple usage needs at once. Easy to use: Insert the wine stopper into the bottle mouth and attach the vacuum pump to remove air until a click is heard, 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. Practical solution without concern for size compatibility. Color: Black Material: Silica Size: 4.2 x 3.3 cm Package Contents: 24 x Wine corks Only the above items are included; other accessories are not included. Note: Lighting and display differences may cause slight color variations between the image and actual item. Measurement error allowance is +/- 1-3 cm.