Material: Clear, heavy glass that is nonreactive and easy to clean. The transparent design lets you monitor food without disturbing the jar. Function: Keeps vegetables and other ingredients fully submerged under brine to prevent mold and ensure even fermentation. Stops items from floating so you get consistent results. Compatibility: Designed for widemouth jars and compatible with most standard widemouth lids and airlock systems. Works with common canning and pickling jars. Size and handling: Portable, easytohandle size for lifting in and out of jars. Heavy enough to hold contents down but compact enough for storage and transport. Build quality: Fine workmanship for practical durability; smooth edges and solid construction minimize breakage and make rinsing simple. Versatility: Ideal for pickling, lactofermentation, and general canning support. Use as a jar fermenting weight or a tank weight in a variety of home food preservation tasks. Practical use scenarios: Fermenting sauerkraut or kimchi: Place the glass weight over shredded vegetables to keep them submerged in brine for reliable, even fermentation. Refrigerator pickles: Use the weight in a widemouth jar to prevent cucumbers and other vegetables from floating, producing crisp, uniformly pickled results. Smallbatch canning and storage: Use with airlock lids or standard widemouth jars to maintain a controlled environment while preserving flavors and texture. What you get: A durable glass fermenting weight designed for widemouth jars, easy maintenance, and consistent performance that helps deliver better, more reliable fermentation and pickling results.