Description Made of eco-friendly glass material, durable, and odorless. Standard capacity: clear scale, easier to identify for accurate measurement. No bubbles, 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: 10x5x3.5cm. - Made of eco-friendly glass material, durable, and odorless. - Standard capacity: clear scale, easier to identify for accurate measurement. - Excellent product quality, with quality assurance. No bubbles, no burrs, smooth and rounded. - More convenient to use for students in school when doing experiments in chemistry class. - With a cork, it is more practical and safer to use when heating.Package list: 1 x Glass Flask 1 x Cork