Our clear glass general purpose jars are as functional as they are economical. These general purpose jars feature a continuous thread (CT) finish. A CT finish has a continuous single spiral around the neck of the container. Jars with a CT finish can be capped with a wide variety of screw top closures to create your custom product. These jars are not compatible with lug caps. Jars include white metal threaded caps with pulp and polyethylene (PE) liner.