Ball Regular Mouth 1/2-Pint (8 oz.) Glass Preserving Jars are ideal for fresh preserving recipes such as jams, jellies, conserves and preserves. Our famous glass jars and closures go beyond fresh preserving to help you with serving, creative décor and gift giving. Capacity: 1/2 Pint (8 ounce) 12 Regular Mouth Glass Preserving Jars 12 Regular Mouth Lids with Bands.