Specifications: The product automatically vents gas to prevent air from entering the bottle, ensuring that the food does not become moldy. You don't need to open the fermenter every day, just release the excess pressure and keep the water level. It suitable for any 2.76/3.39 inch wide glass jar, cans and fermenters with diameter. The lid can be cleaned quickly and efficiently, also can get cleaning done fast and efficiently on both dishwasher and handwashing. Item Name: Fermenting Lid Material: Silicone, Metal Application: for Making Pickles in Mason Jars, Coffee Cups, and Water Cup, etc. Features: Sealed, Wide Mouth, Waterless, Durable Single Lid Diameter: 70mm/2.76", 86mm/3.39" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Fermenting Lid with Steel Ring (Food and Jar Not Included)
