Unique Tick Design Our glass large mason jars with lids feature clear capacity markings, allowing you to see at a glance how much beverage or pickle is inside. 4.27 inch Large Diameter Opening The 4.27 inch (10.84 cm) wide opening makes loading easy and versatile. It is wide enough to fit a 1 cup measuring scoop and even to allow a hand to reach in for cleaning. Food Grade Safe Jar The large canning jars with lids are made from thick-grade material. They are BPA-free and lead-free. These jars are suitable for dry food storage as well as canning, pickling, and fermenting. Anti-Crack Tips To help prevent cracking, soak the jars with airtight lids in warm water before adding boiled liquids. Avoid sudden temperature changes, such as pouring boiling water directly into a hot jar or placing a hot jar on a cool or wet surface. Use scenarios - Canning, pickling, and fermenting vegetables, fruits, and preserved foods, making it convenient to prepare and store batches. - Dry food storage and pantry organization for items like beans, rice, flour, nuts, and grains, with easy visibility of contents and remaining quantities. - Beverage storage and serving, including large batches of juice, tea, or infused drinks, with easy scooping, pouring, and cleaning accessibility.