These 1/3 oz (10 ml) clear glass bottles with plastic rollers and black caps are sold in a pack of 5 bottles, rollers, & caps. They are great for dispensing essential oils and blends.
You can use a plastic pipette or glass dropper to fill these bottles. After you have added your oils to the bottle make sure to press firmly down on the roller, as this will help avoid leakage. Bottles containing oils or other liquids should be stored and transported upright to prevent leakage.