Square Mason jars are perfect for a distinctive look for your project or gift. These jars are ready for storing jams and preserves, as they can be used in hot-fill or water bath canning. You can also use these Mason jars for candle making, bath and body products, party favors, and more. Available in 4 oz., 8 oz., 16 oz., and 26 oz. sizes, in cases of 12 jars. Match with our large selection of food-grade or decorative lids for the final stamp on your project. Low prices and wholesale pricing on individual and bulk orders.