4-Pack of 1-gallon glass mason jars with metal airtight lids for fermentation, canning, pickling, and storage - Made in USA Airtight metal lids with non-removable plastisol liner and ridges for easy opening and closing Wide mouth 4.33 Inch (110mm) Diameter Mouth Opening: for easy access and dispensing, and dishwasher safe for easy cleaning Multipurpose use for brewing kombucha, storing dry goods, pickling, canning, and more, with an eco- friendly and sustainable design Made in the USA with strong and durable glass, ensuring long-lasting use for all your storage and fermentation needs.