Test Tube Racks features:Do you want to do some chemistry experiments at home or at school or at laboratory, then you must not miss our plastic test tubes. It can be used to storage liquids, salt and other items. It is easy for you to do and operate. FeaturesColor: Assorted colorMaterial: PlasticSize:25.40X11.30X6.20cm/9.98X4.44X2.44inchDurable and environmentally friendly, safe and secure for use and storageCompared with glass test tubes, plastic test tubes with caps are safer and durableA great teaching tool set let you explain the knowledge in the books more concretely, which makes it easier for students to learnEach tube is equipped with a plastic stopper to enable a good sealThe package contains 80pcs test tubes with lids and a test tube rack, which can meet your diverse needs in daily life.