BALL WIDE MOUTH MASON JAR 64 OZ. - Half-Gallon mason jars are perfect for Fermenting Sun Tea, Kombucha ETC.& Safe For canning all kinds of Special precautions for low-Acid food like Fruits, tomatoes, sauces, salsas jam & jellies, pickles - The band, when screwed down, An integral rubber ring on the underside of the lid creates a Leak Proof-Hermetic seal. While the bands are reusable, the lids are intended for single use when canning.The jar’s stack - ability helps you save space in Your Kitchen and in the fridge until you’re ready to Use!