Specification Brand : Ddewing BulletPoint1 : FOOLPROOF FERMENTATION: Fermenting veggies is tricky without the right pickling supplies and equipment. Strong pressure presents & can blow off the cover or even burst the glass. So our own-way valve prevents spoilage. BulletPoint2 : CLEVER DESIGN: These premium quality self burping ferment caps have a one way waterless valve to vent gas automatically while home fermenting vegetables. BulletPoint3 : HIGH QUALITY MATERIAL: Our Fermentation Lids are made of high quality silicone material, which are tough and durable and easy to clean. BulletPoint4 : SPECIAL DESIGN: This unique silicone lid design can fit on a wide or regular mouth mason jar, because it has a inner and outer silicone ring. BulletPoint5 : WIDE USAGES: Kimchi jar can ferment any vegetable from cabbage to carrots, cucumbers, tomatoes, garlic, radishes & more. Color : #1 IsDishwasherSafe : 1 IsMicrowaveable : 1 ItemName : Silicone Lid Silicone Fermenting Lids Waterless Airlock Fermentation Lids Wide Mouth Mason Jar Fermenter Cap for Pickles, Kimchi, and Fermented Probiotic Food (#1) ItemPackageDimensions_Height : 4 centimeters ItemPackageDimensions_Length : 16 centimeters ItemPackageDimensions_Width : 10 centimeters ItemPackageQuantity : 1 ItemShape : Round ItemTypeKeyword : brewing-and-venting-fermenters Manufacturer : Ddewing Material : Silicone NumberOfItems : 1 NumberOfPieces : 5 PartNumber : Ddewingpi5g9roy2v41252--1 ProductDescription : Features 1. The organic silicone fermentation cover can be used for a long time, has no peculiar smell, no BPA, does not fade under daily temperature. 2. Suitable for dishwashers, and can also be easily washed by hand, without time-consuming and labor-intensive maintenance. 3. The fermentation tank lid, 8.6cm / 3.4inches in diameter, suitable for fermenters for making sauerkraut, from cabbage to carrots, cucumbers, tomatoes, garlic, radishes & more, ferment your own sauerkraut, pickles, kimchi & more and can also be used to store coffee beans. 4. Package includes 5 silicone fermenting lids, with or without 5 metal rings, depends on your choice. 5. Try out fermenting and become a probiotic vegetables maker with the best supplies.