Package information: Stoppers are made of quality materials and sufficient in quantity to meet your daily use and replacement needs. They are suitable for various occasions and can be shared with others. Practical 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 help remove air from bottles, allowing wine to be stored longer while preserving flavor. Applicable occasions: These reusable wine saver vacuum stoppers are ideal for home use, as well as restaurants, hotels, cafes, or bars. The included quantity provides ample supply for multiple uses. Easy to use: Insert the wine stopper into the bottle mouth and attach the vacuum pump. Remove air until you hear a click, indicating the bottle is properly sealed. Simple and time-saving operation. Strong adaptability: These black vacuum wine stoppers feature a standard size that fits most wine bottles, including red wine and white wine bottles. They are practical solutions without concerns about compatibility issues. Color: Black Material: Silica gel 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 actual item. Measurement allowance is +/- 1-3 cm.