Ball Mason jars are the right choice for canning and preserving. The included lids seal these canning jars so that no air enters the jar, thus preserving your food items. These jars are made of clear quality glass, so it is easy to identify the items you have. They can even be refrigerated. Jam Regular Mouth 8oz Elite Clear 4pc- Round shaped jar with embossed fruit designs; grapes, strawberries, cherries, and peaches. Jar has a regular mouth, Silver lid and ring and holds 8 ounces.