Are you looking for a professional and practical test vial? , ! Our sampling tube must meet your needs. This test tube is made of material, durable and sturdy for use. Fine workmanship practicality and durability. Features -Color:Transparent -Material: -Size:10.50X1.60X1.60cm/4.13X0.63X0.63in Volume: 10ml -This set of plastic test tubes with caps is both durable and freezer safe, ensuring safe and secure use and storage. -When compared to glass test tubes, plastic test tubes with caps are a safer and more durable option. -This teaching tool set is an excellent resource for explaining concepts in books in a more visible way, making it easier for students to understand. -Each tube comes equipped with a plastic stopper to ensure a tight seal. -With various test tubes and lids, this set is versatile and can meet a variety of needs in your daily life. Package list: 20 x sampling tubes