Product introduction: 100% brand new and high quality When you are relaxing, you want to taste the wine, but you are worried that you can't finish it at a time. As time increases, the wine will be exposed to the air and gradually oxidized. At this time, you need a zero-air vacuum storage method to keep fresh longer. Need to match the enclosed bottle stopper, and then use the vacuum pump to pump up and down repeatedly until it makes a click sound, which means the pumping is complete. Product specifications: Material: Stainless steel, Silicone Color : Black,Red Size: 3.2*9.5cm Product package list: 1 Pcs Bottle stopper Notice: 1 cm = 0.3937 inches; 1 mm = 0.03937 inches;1 inch = 25.4 mm; 1 inch = 2.54 cm. Due to different displays and lighting effects, the actual color of the product may be slightly different from the color shown on the picture. Since this product is purely hand-measured, please allow a measurement deviation of 1-3 cm. Hope you can understand, thank you! The merchant warrants that their products comply with all applicable laws, and are offered only if they comply with Joom's policies and EU Product Safety and Compliance laws.