Make canning easy with the Kerr Glass Mason Jar set. When it comes to canning, there's nothing more important than a quality seal. It ensures that no oxygen gets into the canning jar after processing and that your food will remain preserved just the way you created it. Kerr mason jars with lids create air-tight seals with rugged, rust-proof, leak-proof metal lids and bands, and rugged glass jars to withstand high and low temperatures. The lids are also BPA-free and freezer-safe. These regular mouth...