Premium Heavy Glass: These glass fermentation weights are crafted from food-safe, lead-free, and non-porous glass. They'll never absorb food odors, flavors, or colors. Super Value Pack: You'll receive 9 glass weights with an easy-to-grip design. Size: 2-3/4'' / 7cm in diameter and 1'' / 2.5cm in height. Each weight is 7 oz (200g). Upgraded Knob Handle Design: Yesland's clever bulge handle makes it easy to remove these weights from your Mason Jars. Whether it's dry, wet, or halfway down a jar, you won't have to stick your fingers into the ferment or struggle with a utensil. Excellent Universal Fit: Perfect fit for wide-mouth Mason jars. They're much heavier than a typical glass or stone fermentation weight, effectively keeping your expanding ferment perfectly submerged in the brine. Wide Range of Uses: These pickling weights are excellent for fermenting vegetables, probiotic foods, small batches of sauerkraut, pickles, or other fermented food kits.