Value Package: You will get 9 pack pieces fermentation weights. Size: 3.5''/89mm in top diameter, 3.3''/85mm in bottom diameter, and 0.8'' in height. Weight of each is approximately 319 g. The large size is not fit in most US wide mouth mason jars. Please check the dimensions carefully before placing your order. High Quality Heavy Glass Material: Peohud glass weights are made from food-safe materials which are lead-free and non-porous, so they won't absorb food odors or color for long-term use. Easy to Put In and Take Out: Our handles feature an all-new design, and the upgraded knob-protruding handle makes it easy to get those heavy items out of your mason jar, whether it's dry or wet. No more dipping your fingers into the ferment or using tools. Wide Application: Our fermentation lids are suitable for glass jars larger than 3.5" in diameter. Large and heavy enough to submerge the fermented material under brine. Easy to Clean: These fermentation kits are perfect for making nutrient-dense homemade sauerkraut, vegetables, pickles, probiotic foods, and other fermented food.