Measuring Capacity: The glass dropper measures 77x7mm / 3.03x0.28inch. The rubber head length is 30mm / 1.18in. Capacity is 1ml with clear scale markings at 0.25ml, 0.50ml, 0.75ml, and 1ml for accurate and easy measurement. How to Use: Before use, position the rubber squeeze head on the glass dropper so that it can be compressed to draw in liquid. Premium Material: The dropper cap is made of high-quality rubber. The dropper is constructed from thick borosilicate glass, offering high transparency and dishwasher-safe convenience. Wide Application: These pipette droppers are suitable for measuring and transferring various liquids, ideal for use in science experiments, arts and crafts, skincare, essential oils, painting, pet feeding, and more. Color: Transparent. Material: Glass. Package Contents: 2 x plastic tube, 2 x dropper, 1 x brush. The package includes only the items listed above; other products are not included. Note: Lighting and display differences may cause slight variations in color between the image and the actual item. Measurement error allowance is +/- 1-3mm.