Material: This wine stopper is made of high quality plastic and durable, sturdy and fashionable silica gel. It will not be affected by acid and alkali of red wine and will not rust. < p>Specification: It is mainly suitable for bottle mouths with a diameter of 0.6-0.79in / 15-20mm. The wine cork size is about 126.96.36.199inch (114.32.1cm). Each pack contains 3 wine stoppers, enough for daily use. Seal Deaign: The bottle stopper has a good seal and is perfect for preventing air leaks and keeping your wine, champagne and others cool carbonated drinks. Easy to use:Easy to insert and remove from the bottle, just push the cap into the bottleneck. Premium quality bar, kitchen and refrigerator supplies. Applications: The edges are smooth, suitable for a variety of red wine, champagne, wine to maintain its freshness.