The flask is made of good material for durable and use. Suitable for beginners or professional use, also the students. Lightweight and portable, it is very convenient for you to carry. Clear and accurate graduation, easy for you to look when doing experiment. Features - ColorTransparent - Material: PP - Size: About 8.00X5.00X5.00cm/3.14X1.97X1.97in - The appearance design of this erlenmeyer flask is simple and generous. - Come with clear scale line, for accurate measurement. Design with cover for easy storage. - Widely used for education, chemistry, research, or applications. - Solid base design, for more stable placement, reducing measurement error. - Clear bottle makes it easy to observe the change and residual of inner liquid. Package list: 6 x Plastic Flasks