The Pickle Pipe is the only one-piece waterless airlock designed for small-batch mason jar fermentation in regular mouth canning jars.Eliminate the hassles and common pitfalls of traditional methods, and especially those of using 3-piece water-filled airlocks.Why is it necessary.Fermenting vegetables release carbon dioxide.If left in an airtight container, this pressure must be vented regularly or the jar may actually explode.Burping your jar, or using a cloth cover, exposes your ferment to oxygen which can allow harmful mould to grow on your food.The Pickle Pipe's patent-pending one-way valve design allows carbon dioxide to vent automatically, without ever letting oxygen or other contaminants enter the jar.It just works.Zero Maintenance, Easy to Clean, Low Profile and Reusable The Pickle Pipe is simple to use (zero maintenance or monitoring), simple to clean (dishwasher safe) and can be reused over and over again.The low profile design allows you to store your ferments in your kitchen cupboards and drawers, saving space and reducing counter clutter.Together with the family of Masontops fermentation tools (Pickle Pebbles and Pickle Packer), the Pickle Pipe ensures consistent high-quality results from your home ferments.Enjoy delicious, probiotic rich, naturally preserved foods such as sauerkraut, kimchi, real pickles and more.