You won’t have to worry about the shelf life or your home canned food becoming spoiled with the Wide Mouth Mason Jar Lids. With the tight vacuum seal these home canning jar lids lock in freshness, while keeping oxygen out. So when you want to be able to enjoy canned food all year long, make sure that you’ve got the right seal with Ball Wide Mouth Mason Jar Lids.Features With white protective inner coating Fits all wide mouth home canning mason jars Mason jar bands are not included Made in the USA Specifications Quantity: 12 Style: Wide Mouth Material: Tinplate Steel