SAFE MATERIAL: BELLARMOR liquid droppers are made of durable BPA-Free &Food Grade silicone and plastic that won’t produce harmful chemicals..MEASUREMENTS & SIZE :This plastic pipettes eye dropper is marked from 1ml to 5ml. The Plastic pipette width is approx. 0.87 inch.The Total length including the silicone squeeze top is 4.72 inch..MULTIFUNCTIONAL:Great for kids creative activities and fun science projects,candies gummy making,the kitchen,painting, AND MUCH MORE..DETACHABLE & EASY CLEANING:There is no glue used to connect silicone and plastic. This liquid dropper is dishwasher proof and can be cleaned with hot soapy water. Measurements are etched in plastic and will never wash off..EASY STORAGE: It is safe to put in dishwasher, freezer and refrigerator.