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, and other commercial settings. The included quantity meets multiple usage needs. Easy to use: Insert the wine stopper into the bottle neck and attach the vacuum pump. Remove air from the bottle until a click is heard, indicating a successful seal. 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. Reliable performance without concern for compatibility issues. 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 color variations between the image and actual item. Measurement may vary by +/- 1-3 cm.