Wine bottle stoppers provide an air-tight seal to prolong and preserve opened bottles of wine. Designed to fit all bottle types. Made of durable zinc alloy material and food grade silicone material. These stoppers insert easily and remove with a single pull. Bottle stoppers size: High 4.3", Max diameter 0.82". They are good helpers help remaining wine keep its quality and freshness for several days. Stylish tops can be removed by screwing them off.