BETTER than Glass Fermentation Weights - Food Grade Plastic Mason Jar Food Fermentation Weights CUPS keep food submerged in brine (6-3" WIDE MOUTH CUPS ONLY, NOT KITS) WE LISTENED AND THE CUPS ARE NOW IMPROVED as we took heed to the Reviews! A hole is now in the bottom of the Cup for brine overflow and drainage. 6 EXCLUSIVE PATENT PENDING MASON JAR FOOD FERMENTATION WEIGHT CUPS for standard 3" WIDE MOUTH Mason Jars. Does not fit so-called "WIDE MOUTH Gallon Mason Jars" which are NOT standard Mason Jars and come in a variety of diameters. ALL QRP parts and products are USDA Food Grade BPA-free Compliant and are produced by a reputable food container manufacturer. BENEFITS: 1) Reliable alternative to breakable glass fermentation weights, 2) Stays put in place and can't shift, 3) Keeps the expanding fermenting food submerged in the brine, 4) Results in a FULL Mason jar food fermentation, 5) Deters mold, 6) Prevents messy overflow, 7) Protects any airlock device from becoming contaminated by the food and juices, and is 8) Easier to remove than glass weights. COMPLETES your Mason Jar Food Fermentation Kit. May be used in conjunction with other Fermentation Weights. BONUS: A FREE GIFT of a sample "Our Daily Bread" Christian daily devotional is included with each order. If you're not interested in receiving the booklet, simply send a message when placing your order and request that we withhold the gift. Thanks for your consideration! Your Quality Reliable Products purchase supports charitable missions work. We appreciate and THANK YOU in advance for your support.