"Rabbit Flipper Wine Pourer Bottle Stoppers are a stylish and practical addition to any home bar or kitchen. These attractive pourer/stoppers are designed to fit all bottle sizes; flip open to pour, click shut to seal in freshness. Constructed of rubber and tough stainless steel, these pourer/stirrers are made to last. Useful for sealing any kind of liquid: cooking oil, vinegar, salad dressing and more. The stoppers are dishwasher-safe, for easy cleaning. Designed to fit bottles of all sizes." —manufacturer