Swing Lids for Glass Bottles Size: Swing lid diameter is 25.4 mm (1 inch). The frame diameter of the cap is 20 mm (0.78 inch), designed to fit standard flip glass bottles. Durable Materials: Made from quality polypropylene (PP) and stainless steel. Both components are strong, corrosionresistant, and heatsafe, ensuring longlasting performance. Secure Seal Mechanism: * To seal, align the white plug with the bottle opening, push the stainless steel hasp down, and the plug will lock firmly into place for an airtight fit. * To open, lift the edge of the stainless steel hasp upward, releasing the plug instantly. Reliable Performance: The precisionfit design helps maintain carbonation and freshness, making it ideal for beverages that need airtight sealing. Wide Application: for bottles containing carbonated drinks such as beer, water kefir, soda, and homemade beverages like limoncello. Suitable for storing craft brews, fizzy fermented drinks, and smallbatch sodas. Practical Use Scenarios: * Home brewing: Keep your beer fresh and carbonated during storage. * Fermentation projects: Maintain pressure and flavor in water kefir or other naturally fizzy drinks. * Beverage serving: Securely seal homemade sodas or flavored spirits until ready to pour. These swing lids combine durable materials, easy operation, and airtight sealing to provide a