This is laboratory flask, made of , and easy to use. The body of the container has digital scale, can easily read milliliters. The design is simple, the workmanship is , and the performance is stable. Features -Color:Transparent -Material:Plastic - Size: 17.00X10.00X10.00cm/6.68X3.93X3.93in - Size: 8.10X5.30X5.30cm/3.18X2.08X2.08in - Size: 10.20X6.50X6.50cm/4.01X2.55X2.55in - Size: 13.70X8.30X8.30cm/5.38X3.26X3.26in - The Erlenmeyer flask is made of for and use. - Clear and accurate scale design, easy for you to look when doing experiment. - Suitable for beginners or professional use, also the students. Lightweight and portable. - Wonderful and good tool for science study, can exercise various chemical experiments. - It is as present for your kids at school if they do experiments in laboratory. Package list: 4 x Flasks