Welcome to my shop✨ Brand New & High Quality. Color: As the picture. How to use: Release button at the top. Material: Stainless steel (surface), reinforced plastics (inner). Size: Approx.4.1*5*3.1cm Fits standard wine bottle necks. Great necessity for wine storage. Vacuum pump removes air to halt oxidation process. Let you store wine after opening bottle. Keeps open wing fresh for several days. Apply to restaurants, hotels, bars, clubs, KTV, cafes and so on. Package Included: 1 x Stainless Steel Wine Bottle Stopper.