Material: Stainless steel, Silicone Brand: FENG ZHENG Shape: Round Manufacturer: FENG ZHENG Preserves Flavor and Aroma: By pushing the wine stopper several times, it quickly removes air from the bottle, creating a vacuum. This vacuum prevents air and liquid from leaking, inhibiting the oxidation of unfinished wine and preserving its deliciousness. The wine stopper is a preservation tool that maintains the flavor and aroma of leftover wine. It keeps the deliciousness of red wine for a longer time than corkscrews. How to Use: 1. Clean the vacuum pump. 2. Insert the wine stopper into the bottle's mouth. 3. Press the vacuum button several times, which means the bottle is close to a vacuum. 4. Compared to other products, the top of this product is easier to press. It's very easy to open when you're ready to reuse the wine bottle. Product Specifications: Vacuum pump dimensions: 4.2x6.1cm, Weight: 110g, Packaging dimensions: 9x4.5x6.5cm, Materials: High-quality stainless steel, food-grade silicone, innovative two-layer silicone design, extremely durable and reusable. A high-class wine accessory. Wide Application: Suitable for homes, hotels, restaurants, bars, clubs, karaoke, cafes, etc. The appropriate inner diameter of the glass bottle mouth is from 17mm to 20mm. Applicable to: wine, sake, soy sauce, vinegar, liquor saver (not suitable for sparkling wine and champagne) Brand new, unused item! Opened once for photography. Please understand. #WineBottleStopper