Package information: Bottle stoppers are made of quality materials and provided in sufficient quantity to meet daily use and replacement needs. They are suitable for various ocns 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 ocns: These reusable wine saver vacuum stoppers are suitable for home use as well as restaurants, hotels, cafes, or 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 a click is heard, indicating successful sealing. Simple and time-saving operation. Strong adaptability: These black vacuum wine stoppers have a standard size that fits most wine bottles, including red and white wine bottles. They are practical solutions without concern for size incompatibility. Color: Black Material: Silica Size: 4.2 x 3.3 cm Package Contents: 24 x Wine corks Only the above package content is included; other items 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.