At first the set didn't fit my Berkey filters. So I had no choice but to return it. The product itself seemed durable enough to serve and work. On the other hand, the seller only refunded me half of what I paid. They said I used it. I explained nicely that I can use them because they are much smaller than my filters need. So how could I use them? Pay attention to the promises made by the sellers. Unreliable
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