Kombucha Brewing Lids for Mason Jars - 2 pack

They work well. Convenient to use. No flaws noted. After I saw how well they work, I also bought the lids for kefir.

Kombucha Brewing Lids for Mason Jars - 2 pack

I don’t know as these were gifts.

I purchased the Kombucha brewing lids for my jars of sourdough starter and kefir (I'm not currently making kombucha). They are perfect! For some years I had been using coffee filters secured with rubber bands for all my fermenting, but these are so much easier and cleaner, and they're reuseable! I love them!