Mason jar: Ensure even saltwater penetration with our glass weights that fit perfectly into the mouth of regular mouth Mason jars. These convenient weights sit snugly to stop veggies from floating to the top, keeping the perfect brine environment for preservation or briny pickles. Sizes correspond one-to-one per jar. Made completely safe for human and food use, Fermentology Sauer Stones don't leach any harmful compounds.
  Made with a non-porous, food-grade glass that clog-free. Fermentology Sauer Stones are easy to add, remove, and clean, creating a safe, leakproof environment for your ferments. The easy-grip handles are perfect for adding, removing, and transporting. Fermits will thank you with a clearer, better-tasting result.