1.High quality rubber material is durable in use and ensures long service life. 2.It is mainly used for pipette to quantitatively extract liquid in the laboratory. 3.It can also blow off the powdery substance in the sealed container, safe to use. 4.Sufficient blowing effectively blows off more dust, more convenient to use. 5.Smooth tapered tip reduces tissue trauma, more strong and sturdy, increasing suction. Type: Ear Washing BallMaterial: Rubber Capacity: 90ml Application: In the laboratory, the ear wash ball is mainly used for pipette to quantitatively extract liquid. The ear wash ball can also blow the powdery substance in the sealed container. Top to Bottom Height: Approx. 114mm / 4.5in Ball Diameter: Approx. 59.8mm / 2.4in Weight: Approx. 126g / 4.4oz Package List3 x Ear Washing Ball