Package information: Bottle stoppers that are reliable in quality and sufficient in quantity to meet daily use and replacement needs. Suitable for various occasions and can be shared with friends. Practical bottle stoppers: Resealable wine pump vacuum stoppers designed for use with wine vacuum pumps (pump not included). When used with a vacuum pump, they help remove air from bottles to preserve wine freshness and extend storage life. Applicable occasions: Reusable wine saver vacuum stoppers are ideal for home use, restaurants, hotels, cafes, bars, and similar settings. The included quantity meets typical usage requirements. Easy to use: Insert the stopper into the bottle mouth and attach the vacuum pump. Remove air until a click is heard, indicating a successful seal. Simple and time-saving operation. Strong adaptability: Black vacuum wine stoppers are designed with a standard size to fit most wine bottles, including red and white wine. Practical and convenient without compatibility concerns. Color: Black Material: Silica gel Size: 4.2 x 3.3 cm Package Contents: 24 x Wine corks Note: The package includes only the items listed. Other products are not included. Note: Lighting and display differences may cause slight color variations between the image and the actual item. Measurement error allowance is +/- 1-3 cm.