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If it is too good to be true.... I use a lot of these. Ball and Kerr are the only brands I use. When I saw the deal on damaged boxes, I gave it a try. They stated that the merchandize had been checked over (lids, flats). When I got them, one whole set was damaged. They were bent. I would have kept one, but that was not an option. Since those reading this are mostly canners.....don't fall for the pretty clear jars either, they break in processing, even in water bath canning. I used the rest for storing dehydrated foods instead.
I use the wide mouth Mason in quart and 1/2 quart size to store just about any kind of food. I keep a supply of the stamped lids on hand so I never have to worry about a leaky seal. This time I ordered the lids and rings because sometime an acid food will get on the ring, and I don't wash it soon enough. They will get rough and pit, and can be hard to screw down tight .. so I toss them. These are the real deal, top quality Mason jar lids and rings.