Usage Tips:Package information: bottle stoppers, which are in quality and sufficient in to easily meet your daily use and replacement needs; They are suitable for occasions and can be shared with your Practical bottle stoppers: these resealable wine pump vacuum stoppers are designed for wine vacuum pumps (pumps are not included), which with vacuum pumps can easily remove air from bottles, so that wine can be stored and Applicable occasions: these reusable wine saver vacuum stoppers are not only suitable for daily use at home, also for restaurants, hotels, cafes, or shopping malls; Sufficient quantities can meet your needs at one time Easy to use: you need to insert the wine stopper into the bottle mouth and vacuum pump, to remove the air from the bottle until you hear a click, which indicates that the bottle has been successfully sealed and easy to use, saving you more time Strong adaptability: these black vacuum wine stoppers are of general size, which are suitable for most wine bottles, such as red wine and white wine, etc.; They are practical helpers without worrying about model mismatch color:Black Material:Silica size:4.2 x 3.3cm Package Contents: 24 x wine corks Only the above package content, other are not included. Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.