4oz Tapered Jar with 70mm CT finish. The smooth sides of these little jars make them a favorite alternative to the Ball quilted 4oz jars. These jars can be used in hot fill (with the standard plastisol or two piece lids) or water bath canning with HI-Heat or two piece canning lids. The absence of shoulders in this jar allows for easy filling and easy scooping, dipping of the delicious contents! They also make convenient storage for leftovers and are part of the official Mason Jar Meal starter kit.