Made of glass material, , and practical using. Standard capacity: clear scale, easier to identify for accurate measurement. No burrs, smooth and rounded. More convenient to use for students in school when doing experiments in chemistry class. Features - Color: Transparent -Material:Glass - Size: 14.00X7.00X7.00cm/5.50X2.75X2.75in -Capacity:150ml -These glass flasks have professional and practical design, which can prevent spatter of liquid from bottle effectively. -Wide mouth design makes it more easy to clean and refill liquid, clear enough for you to read the data with precise scale design. -Compact size, convenient and easy to store and carry. It won' take up many spaces on the desktop or in the drawer. -Suitable for students in school laboratory when doing experiments in the chemistry class, good seal can protect the liquid very well. -Made of , and for use, especially the students can use it with ease. Package list: 1 x flask with Stopper