Optimal Fermentation Solution This fermentation weight is designed to keep your vegetables submerged under the brine, providing an optimal environment for fermentation. Made from food-grade glass, this fermenting weight is safe for use and helps submerge fruit and vegetable ferments in the brine more effectively. Universal Fit With dimensions of 7.2 cm x 3 cm (2.83 inches x 1.18 inches), it fits most wide-mouth canning jars regardless of jar capacity. Good Sealing The wide-mouth fermentation lid provides a good seal and is easy to place into and remove from jars, supporting a consistent fermentation process. Durable and Reusable Sturdy construction allows for repeated use. These glass fermentation weights and wide-mouth lids are ideal for making sauerkraut, tomatoes, carrots, and other fermented or pickled foods. Package Includes: 1 x Fermentation Weight Note: Please allow slight variations due to manual measurement and differences in monitor displays.