·Square Design with Airlock: Our square fermentation glass tanks are the ultimate solution for all your fermentation needs. The innovative airlock prevents pressure buildup and creates a perfect environment for your fermentation. The square design also allows for better utilization of storage space. Open the lid and cover with a cloth, perfect for kombucha fermentation.

·100% Airtight Seal: The specially designed lid ensures a tight seal, and the gas produced by fermentation can only be discharged from the hermetic lock in one direction, which can keep the fermented food fresh and free from contamination. When fermentation is complete, simply remove the vent valve and cover directly with a silicone cap.

·4.3“ Wide Mouth: The 4.3” wide mouth design makes adding ingredients and cleaning the jar easy. Whether you're fermenting whole vegetables, making mead, or batching fermented foods, this jar's wide mouth design simplifies the entire process.

·Measurement Markings: The jar features precise markings in milliliters (mL) and fluid ounces (fl. oz) on the side, allowing you to accurately measure ingredients and track fermentation progress.

·Complete Set: This complete kit includes everything you need to start fermenting right away - high quality fermenters x 2, airlock valves x 3, manual x 1.