Glass Eye Droppers, Black Bulb Glass Droppers for Use with 10 Ml Essential Oil Bottles. Child Resistant Screw Top - 6 Pack (6pc) TO ENSURE you are getting the Actual product described in this listing -- Be Sure To Only Purchase From Biblelot-Bottles - Amazing Marketplaces! ---- SAVE TIME AND OIL - This set of Eye Droppers are pre-assembled for your convenience, so you just need to replace the lid of the bottle with this Eye Dropper and you are ready to go. With Eye Droppers, you are sure that you are using only required an amount of liquid without wasting any of it. DESIGNED FOR EFFECTIVENESS AND REUSABILITY - The plastic tubes may get deteriorated by pure essential oils, however, the glass tubes work just perfectly with the essential oils. Moreover, the Glass Eye Droppers are designed for reusability. Just wash the droppers and reuse it again. The glass tube on the dropper is detachable from the rubber top for convenient & better cleaning of the dropper. LEAKPROOF - The Child Resistant screw top provides a leak proof seal. This Glass Eye Dropper fits perfectly on bottles with a bottleneck of 18mm/400. BLEND OILS WITH MEASUREMENT - With Eye Droppers, you can be sure of the amount of oil you are adding to a blend. When you are following recipes, most of the time measurements are specified in drops, and for a perfect blend you need to make sure you are adding only the required number of drops. CUSTOM FIT - Our Eye Droppers are custom made to fit glass bottles with a 8mm/400 Neck.