At least twice as robust as the OEM lid which cracked after a couple years. These are a great value and will last a long time.

I would like to see them in a thicker plastic - since injection plastic molding is incredibly inexpensive only a few pennies per piece at most - a few more cents for more durable plastic would make this product a great product.

These fermenting lids arrived on time and were exactly as described. They fit my 120mm jar openings perfectly! I am very pleased as always with Cultures For Health!

I got these lids for my jars I purchased on Amazon and they worked perfectly! Good airlock system that is economical for my fermenting!

Thanks your products are Wonderful!