The  dosing pump is made of plastic and is available in three colors:  white, black.  It has a left-right blocking mechanism and an outer spring. This product is designed for blockage of cosmetic bottles. Suitable for dosage and convenient use of liquid cosmetics of dense texture: cream, shampoo, liquid soap, shower gel, lotion, etc. The standard dosage with one click is 1.2-1.6 ml. To choose the right set  pay attention to the diameter of the neck - 28/410