The Glass pipette dropper is Cosmetic packaging used for transferring small amounts of liquid from one container to another.Aluminum Dropper Material: Aluminum, Plastic-PP, Silicon, Glass;size:20mm,Glass Dropper consists of a long, thin tube with a bulb at one end that is squeezed to draw up a liquid. The other end is usually fitted with rubber teat. The liquid is then released by pressing down on the bulb. Aluminum Medicine Droppers are commonly used in Essential oils, creams and other skin care packaging. Product Details