Package information: Bottle stoppers are made of quality materials and are sufficient in quantity to meet your daily use and replacement needs. These resealable wine pump vacuum stoppers are designed for use with wine vacuum pumps (pumps not included) and help remove air from bottles to preserve wine. Applicable occasions: These reusable wine saver vacuum stoppers are suitable for home use, as well as restaurants, hotels, cafes, and similar settings. The included quantity provides ample supply for multiple uses. Easy to use: Insert the wine stopper into the bottle opening 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 feature a standard size that fits most wine bottles, including red and white wine bottles. They offer reliable performance without compatibility concerns. Color: Black Material: Silicone Size: 4.2 x 3.3 cm Package Contents: 24 x Wine Stoppers Note: Lighting and display differences may cause slight variations in color. Measurement may vary by +/- 1-3 cm.