If you want your kids to do some small chemistry experiments, then our plastic test tubes are carefully prepared for you. They can be used to store liquids, perfume and other items. With proper size and light weight, perfect for both professional and personal use. It has a stopper to prevent leaking and the storage rack is convenient for storage. Features - Color: Assorted color. - Material: plastic. - Size: 16.00X5.00X4.80cm/ 6.29X1.97X1.89inch.(storage rack) - Size: 15.00X1.60X1.6cm/ 5.89X0.63X0.63inch.(tube with small diameter) - Size: 10.00X1.20X1.20cm/ 3.94X0.47X0.47inch.(tube with large diameter) - Note: The color of stoppers is random. - Made of plastic materials, these test tubes will not break or deform easily, support your long time use. - Equipped with a stopper to ensure a good seal, better prevent liquids from leaking, you can use rest assured. - Small in size and light in weight, bring you of convenience to use or store. - Suitable for storing liquid, perfume and other items, also good for doing experiments. - The storage rack is convenient for storage and classification, let your tube maintain a vertical stage. Package list: 1 rack 2 with stoppers(small diameter) 4 with stoppers(large diameter)