Glass jars in assorted sizes, perfect for jar spells, storage, or traveling. The 3mL, 5mL, 12mL, and 30mL jars all have cork tops, the 15mL and 20mL have plastic, screw-tops. All are clear glass. These small jars can hold various liquids, such as oils, or moon water, as well as salts, herbs, or stone chips. They can be used in a variety of aspects in your practice!