Select safe and premium material, no side leakage, having long service life. With easy-to-read markings that contrast nicely for easier and accurate measuring. The products are packaged with four different tools, such as, Glass measuring cylinder, dropper, brush, glass rod, making it easy to use. Smooth cup body, transparent cup body, liquid clearly visible. Perfect for doing experiments, laboratory needs, such as, measuring liquid, and more. This set of products are transparent measuring cylinders, dropper, measuring cylinder brush and glass rod which are made of high-quality grade material. and practical. It is convenient to measure with scale lines. Besides, it is easy to carry, you can easy to clean it Size of graduated cylinders: 23.00X5.50X5.50cm/9.04X2.16X2.16in. Size of Dropper: 9cm/3.54in,12cm/4.72in,15cm/5.90in. Size of Glass Rod: 20cm/7.87in. Capacity of graduated cylinders: 100ml, 50ml, 10ml, 5ml. Colour: white Material: glass Package Contents: 4 x glass measuring cylinders 3 x droppers 2 x measuring cylinder brushes 1 x glass rod Only the above package content, other products are not included. Note: Light 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.