Package information: Stopper set included for daily use and replacement needs. These practical stoppers are designed to work with wine vacuum pumps (pump not included) to remove air from bottles, helping preserve wine freshness. Ideal for various settings including home use, restaurants, hotels, cafes, and bars. Applicable ocns: Reusable wine saver vacuum stoppers suitable for everyday use and commercial environments. Sufficient quantity provided per pack to meet immediate needs. Easy to use: Insert the stopper into the bottle opening 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 in standard size fit most wine bottle openings, including red wine and white wine bottles. Reliable performance without compatibility concerns. Color: Black Material: Silica gel Size: 4.2 x 3.3 cm Package Contents: 24 x Wine Stoppers Note: Light and screen display differences may cause slight color variations between image and actual item. Measurement tolerance: ±1–3 cm.