Set of 6 - Le Parfait French Wide Mouth Glass Canning Jars - 35 oz, 26.5 oz, 17.5 oz, 12.3 oz, 7 oz, and 4.5 oz Le Parfait jars are French jars which have been designed specifically for canning and making preserves. Six Sizes: 35 oz/1000 grams, 26.5 oz/750 grams, 17.5 oz/500 grams, 12.3 oz/350 grams, 7 oz/200 grams, 4.5 oz/125 grams. Le Parfait jars are useful for keeping nuts, grains, and other foods in an air tight environment. They are heavy, made from thick glass which can handle the heat of the canning process. Wide mouth jars come with rubber gaskets.