One-way Exhaust Valve Fermentation Lid Fermentation Lid Kit for Wide Mouth Jars 86mm Kitchen Accessories Tools 40JAOOTDTY100% Brand New and High Quality Features: With one-way exhaust valves, automatic venting to prevent air from entering the bottle, to ensure that the food will not be affected by oxygen and dust. You don't have to open the fermentation lid every day, just release the positive pressure and keep the water level. Suitable for any wide preserves jar with a diameter of 3.4 inches or other jars with a diameter of 3.4 inches. Perfect for making kimchi yourself, fruit wine, sauerkraut, kimchi, ginger carrots, cucumbers, etc. Easy to clean, the plastic housing can be cleaned in the dishwasher. Specification: Material: Plastic Diameter: About 86mm / 3.4in Optional Colors: Red, Blue, Hot Pink, Green, White, Green, Grey Quantity: 1 Set Note: Please allow 0-1cm error due to manual measurement. Pls make sure you don't mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package Contents: 1 x Fermentation Lid Valves1 x Exhaust Valves(Other accessories demo in the picture are not included.)