Did you know it is easy to make fresh, tasty sauerkraut, kimchi and other fermented foods in your own kitchen in a mason jar? It is! The glass weights are as wide as possible but still fit inside any wide mouth mason jar (pint, quart, 1/2 gallon, etc). Use the weights to hold the ferments below the brine when making sauerkraut and other healthy fermented dishes. No more concerns about toxic chemicals leaching into your ferments. Happy fermenting!