A Complete Brewing Airlock Kit for LongTerm Use This comprehensive brewing airlock combination is designed for durability and convenience, reducing the need for frequent replacements. The kit includes: 6 Bubble Airlocks 6 No.6 Stoppers 12 Grommets For installation, drill a 3/8 inch hole for grommets or a 1 inch / 1.28 inch hole for stoppers in lids such as plastic buckets, mason jar lids, or carboys. for a variety of fermentation projects. Quality Transparent Bubble Airlocks Made from strong, foodsafe materials, these airlocks are tougher and more transparent than typical Sshaped models. This allows you to clearly observe the entire fermentation process. Their improved durability ensures they resist breakage, and with gentle pressure when inserting into drilled plugs or stoppers, they will provide reliable use over time. Improved EasyFit Dust Caps The dust caps feature a zigzag surface design for a secure grip when opening or closing. Inside, three buckles hold the cap firmly in place. To close, press down gently for a secure snap; to open, pull up and rotate. The cap has a builtin gap for gas release, eliminating the need for additional drilling. Reusable and Versatile Applications These bubble airlock sets are solid, reusable, and easy to sanitize for repeated use. Simply immerse in a suitable sanitizer before use, and they are ready for numerous fermentation projects. Suitable for: Kimchi fermentation Kombucha brewing Wine making Fermentation can improve digestibility and may enhance the nutritional value of foods, making this kit ideal for home brewers and fermenters seeking reliable tools for producing quality batches. Specifications: Bubble Airlocks: 6 pieces No.6 Stoppers: 6 pieces Grommets: 12 pieces Hole sizes required: 3/8 inch for grommets, 1 inch or 1.28 inch for stoppers Material: quality, transparent, foodsafe plastic Compatibility: Fits lids on plastic buckets, mason jars, and carboys The kit is built for lasting performance and clear fermentation monitoring, ensuring consistent results across a wide range of brewing and food fermentation projects.