This item are transparent measuring cups which are made of glass material. Lightweight and practical. It is convenient to measure with scale lines. Besides, you can easy to clean it, suitable for chemistry experiment, and schools, laboratory use, etc. Features - Color: Transparent. - Material: Glass. - Size: 12.50X9.00X9.00cm/4.91X3.54X3.54in. - Made of premium safe glass material, light weight, and practical to use. - With easy-to-read scale that contrast nicely for easier and accurate measuring. - Transparent design makes you see the liquid inside easily, giving of convenience to you. - It is a practical measuring device for laboratory when doing experiments. Beakers of different capacities can meet your various experimental needs. - A wonderful helper for schools and laboratories, helping you to teach students and do experiments in a more convenient way. Package list: 5 x Beakers (50ml+100ml+250ml+400ml+600ml)