* The stoppers are lever-operated and are used to easily reseal all your bottles. * Keep the lever vertical and insert it into the neck, then lower the lever until it touches the bottle. Each lever stopper is equipped with an easy-to-use mechanism. To reseal a bottle, simply keep the lever in a vertical position, insert it into the bottle's neck, and then lower it until it touches the bottle. This action creates a perfect seal, ensuring that your precious wine remains preserved and nothing spills. One of the notable advantages of these lever stoppers is their ability to preserve the bubbles in carbonated drinks, allowing you to maintain the freshness of your sparkling waters without losing carbonation. Additionally, these stoppers are washable and reusable. Regarding dimensions, these stoppers measure 8 x 3 cm, making them compatible with most common wine bottles. The material used is quality plastic, ensuring long-term durability.