There are 20 essential oil glass dropper in the transparent box, and each glass dropper has a clear scale (0.25 ml, 0.50 ml, 0.75 ml, 1 ml), which can accurately measure the dose of liquid and . The titao bottle body is made of high gloss glass. It can easily measure oil and liquid. The bulb of the dropper is made of natural rubber to provide good suction to keep the liquid in the dropper. The dropper can be easily separated from the glass bottle and the rubber head, gently pulled out and washed with water. Drop tubes are suitable for measurement and transfer of various liquids, such as scientific experiments, crafts, skin care and beauty, essential oils, painting, eye medicine, children's feeding , pet feeding. Put the rubber head in the protruding part of the glass drip bottle and tighten it. Gently squeeze the rubber head, discharge the air in the dropper bottle, and the liquid/essential be easily entered into the bottle. 20 pieces of glass dropper - curved and straight head, 1 ml of droplet tubes, suitable for essential oils, medicine, skin care, laboratory, health care, crafts, measurement and transfer of various liquids, dropper. Colour:As Shown Material:Glass Package Contents: 20 x glass dropper Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.