Ball Mason Canning Lids Regular Mouth 3 x 12 NEW Lids discs BPA Free. Ball Mason Regular Mouth Replacement Discs for Regular Mouth Jars Ball Mason and all canning jars need to have a new disc applied after each use when water bath or pressure canning. These are authentic American discs manufactured by Mason Ball in the U.S.A - to fit their REGULAR MOUTH jars in various sizes. 12 lids discs per box
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