Ensure optimal fermentation with professional-grade airlock valves designed for home brewing enthusiasts. These transparent plastic valves automatically release carbon dioxide during wine, mead, and beer fermentation while preventing oxygen contamination. Key features include leak-proof water seal technology for consistent pressure regulation and integrated insect guard to protect fermenting liquids. Each valve comes with universal 1-inch diameter stoppers compatible with most fermentation containers, buckets, and carboys. Constructed from durable, food-safe plastic that withstands repeated sterilization. Ideal for primary and secondary fermentation stages across various brews including grape wines, honey meads, and fruit ciders. Technical specifications: Material: BPA-free eco-friendly plastic Dimensions: 17cm/6.6" total length Includes 5 reusable airlocks with airtight rubber grommets Works with 1.5" to 2" fermenter lid openings