Pipettes features: Thumb wheel design allow for an easy one-hand operation with the pipette pump. Precise filling and dispensing provides high accuracy dispensing. Side level allows the liquid samples in the pipette pump to be dispensed rapidly. Features Size: 16.00X2.20X2.20cm/6.29X0.86X0.86 inch Material: Plastic Capacity: 2ml The pipette pump is made of high-quality materials, has strong acid and alkali resistance, and can be used in a variety of liquids By rotation of the thumb wheel draws or dispenses the liquid with precision and ease Easy operation, this pipette pump is easy to operate by one hand to depressing the side lever the entire contents can be dispensed rapidly You will have a good use experience because of the perfect workmanshlp of this product It is simple in design, but its practical to use, which will give you a good use experience.