This is a laboratory flask, made of plastic materials, durable and easy to use. The body of the container has a digital scale, can easily read milliliters. The design is simple, the workmanship is , and the performance is stable. Features - ColorTransparent - Material: Plastic. - Size: 8.50X5.50X5.50cm/3.34X2.16X2.16in. - Capacity: 50ml. - materials, no peculiar smell, no harm, safe and durable. - Small size and light weight. Easy to store and carry. Saving much space for your house. - The wide mouth design makes it easier to clean and refill liquids. The unique design can prevent the liquid from splashing from the bottle. - The close-fitting cover prevents the liquid in the bottle from contacting the air, and also effectively prevents and other incidents from entering. - It is more convenient for students to use in the school laboratory when doing experiments in chemistry class. Package list: 10 x Plastic Flasks