Measuring Capacity: The glass dropper measures 77x7mm/3.03x0.28inch, the rubber head length is 30mm/1.18in, the capacity is 1ml, transparent glass is visible, and the scale marked 0.25ml, 0.50ml, 0.75ml, and 1ml, making it easy and accurate to measure. How to Use: Before use, the rubber squeeze head on the glass dropper needs to be pulled to the appropriate position so that the rubber head can be squeezed to absorb the solution. Premium Material: The dropper squeeze cap is made of premium rubber. The dropper is made of thick borosilicate glass, which is highly transparent and dishwasher safe. Wide Application: Our pipette droppers are suitable for measuring and transferring a of liquids, such as scientific experiments, arts and crafts, skincare, essential oils, painting, eye , pet feeding, and more. Colour:Transparent Material:Glass Package Contents: 2x plastic tube 2x dropper 1x brush Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.