HEALTHY MATERIALS: Our pipettes dropper is made of food-grade silicone, safe and non-toxic, durable, etched plastic, will not be washed off.LENGTH: The pipette are etched with scale from 1 ml to 5 ml; Total length: 12 cm.BRIGHT COLORS:Convenient to identify the different materials and ingredients used.The pipette can be a good children pipettes,easy to attractive the kids attention.APPLICABLE USAGE: Very easy to clean and wash, these plastic pipettes can be easily separated from the silicone dropperTRANSPARENT SCALE : You have ordered a total of 6 dropper pipettes . You can use a fixed color dropper to transfer fixed liquid, which is more hygienic.