Check the listing for details. 6 Pcs Plastic Glass Dropper Closure Top for 30ml(1oz) Bottle, Black. Condition: New. Listed at 9.52 USD. The dropper is widely used in laboratories or homes for experiments, crafts making, or other liquid transferring. It is suitable for essential oils, acids, oil, watercolor, pigment, etc.SpecificationSuitable for 30ml(1Ounce) Essential Oils BottleTotal Length: 94 mm/3.7 Inch;Glass Size: 77 x 7.2 mm/3.03 x 0.28 Inch(L*W)Material: Glass, RubberColor: BlackPackage List: 6 Pcs x Glass DropperAdvantage1. The dropper is made of thick, durable glass material that can be used for a long time. Soft rubber bulbs have excellent suction to absorb and retain liquids. The screw cap design can prevent leaking.2. The dropper and rubber can be taken apart, allowing you to clean and replace the dropper easily.Instruction1. Put the dropper into the liquid bottle or other container, and squeeze the rubber bulb to absorb the liquid.2.