Easy to use: Cover the mouth of the bottle with a wine stopper and press the metal handle on the side to close the bottle. Champagne corks seal well and you can enjoy the wine in the bottle the next day. Wide range of applications: 4 black wine stoppers, 6.5 x 3.8 cm/2.55 x 1.5 inches. Wine stopper inner diameter: 2 cm. The vacuum sealing champagne stopper has a smooth surface, no sharp edges and is safe to use. Safe material: Made of stainless steel and food-grade silicone, reusable, durable, non-rusting, non-cracking, non-fading, safe and healthy. VERSATILE - Vacuum sealing champagne stoppers are great bar accessories and a must-have addition to your kitchen and home bar. Makes the perfect personalized wine gift for wine lovers, preserves red wine and creates closure for most wine and champagne bottles.