Glass Eye Dropper 4 oz(120ml) Set of 6 Droppers W/Screw Top | Glass Eye Dropper Only | Use for Essential Oils, Labware Glassware, Art & Craft Projects, Kids Craft | Long Dropper Tube | Leak Free Seal 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 oil dropper and you are ready to go. With these eye droppers, you are sure that you are using only required an amount of liquid without wasting any of it. DESIGNED FOR EFFECTIVENESS, REUSABILITY, AND NOW MORE SUCKING POWER - 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. Newly Designed Rubber Bulb will suck up liquid half way up the Dropper Tube! LEAKPROOF - The screw top provides a leak proof seal. This Glass Eye Dropper fits perfectly on bottles with a bottleneck of 22mm/400 Compatible with Now Essential Oils Bottles 4oz 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. UNIQUE DESIGN - Exclusive Ball Tip Insures That Every Drop Is Exactly Is Perfect. Now with Built in Measurements! The Scale makes these droppers even more convient Markings for 2.0ml, 1.5ml, 1.0ml, 0.5ml!