The 500 gm Glass Jar with 53 mm RO Neck is premium, high-quality, food grade, FSSC 22,000 certified, food grade, flint (clear), complete toxic free and lead free. These jars are fully microwave and dishwasher safe. These glass jars are being used for packing coconut oil, ghee, honey, jam and preserves, dry fruits, candies and chocolates, desserts, etc. The glass jar has open wide mouth, which makes them easier to wash and clean as well put and scoop out product easily.