Review on AIEVE Fermentation Lids - 6 Pack Mason Jar Fermenting Lids with Extractor Pump and Sauerkraut 🍆 Pounder - Fermenter Lids Fermentation Kit for Wide Mouth Mason Jars, Perfect for Making Sauerkraut, Kimchi, Pickles by Jessica Rodriguez

The lids are great, work great, I've had them for almost 3 years now and they work as good as new. At least once a week I make a ton of cucumbers, carrots, giardiniera and kvass. Muddle Stick is worth its weight in gold, just smear it with meat block conditioner and it will be fresh every time you use it. Now for the bad. The air pump is completely useless. It doesn't work out of the box, and the company doesn't just sell an air pump. Luckily I have an air pump from another set of caps that is 6 years old and still works like new. I would buy another set of caps until the air pump issue is resolved, otherwise a great easy to use cap.