This 30 ml glass roller bottle is sold in packs of 2 and contains plastic rollers and black caps. These are great for use and storage of essential oils, blends, and other liquids. 30 ml = 1 oz.
You can use a plastic pipette or glass dropper to fill the bottle. After you have added your oils to the bottle make sure to press down firmly on the roller, as this will help to prevent leakage. Bottles containing oils or other liquids should be stored and transported upright to prevent leakage.