These attractive glass Weck fermenting weights are used to compress the produce during fermentation. Use small for our 1.5 Litre Weck Fermenting Jars and Medium for the 2.5 Litre Jar.
Made of the highest quality glass, they contain NO BPA! (Bisphenol A), lead, mercury or cadmium.
Small = 70mm/ 2 3/8"
Note that the fit is tight and if you are fermenting very liquid foods, the weight will sink unless there is sufficient food mass in the jar to hold it up.