If you want your children to do some small chemistry experiments, then our test tubes kit is carefully prepared for you. The tubes can be used to store liquids, perfume and other items. Suitable size and light weight, good for both professional and personal use. It has a stopper to prevent leaking while the storage rack can store the tubes very well. Features -Color:Assorted Color -Material:Plastic -Size:16.00X5.60X3.70cm/6.29X2.20X1.45in -Size:11.00X1.20X1.20cm/4.32X0.47X0.47in -Note:the color of the stopper is random. - Made of safe materials, these test tubes will not break or deform easily, support your long term of using. - Each is equipped with a stopper to ensure a good sealing effect, better prevent liquids from leaking, you can use with much more confidence. - Small in size and light in weight, bring you of convenience to use or store, better fit your needs. - Suitable for storing liquid, perfume and other items, also perfect for doing experiments. - The storage rack is very convenient for storage and classification, let your tube maintain a vertical stage. Package list: 2 racks 12 with stoppers