Description Are you looking for a practical plug for your experiment? Do you want a reliable test tube plug? If your answer is yes, please come and take a look at this product. This test tube plug set is made of high-quality material, which has the long service life. It will meet your experiment sealing needs. Features - Color:As Shown. - Material:Rubber. - Size: 2.70X1.90X1.90cm/1.06X0.75X0.75in - Perfect for chemical industry, medicine and other scientific researches use. The practical rubber stoppers, easy to pull and remove, save time and labor. - Made of food grade rubber material, durable and safe to use, you can use them trustingly. - It can be used with the glass tube. It is a necessary opening rubber plug kit for experiments. - Not only suitable for professional research institutions, but also suitable for individual containers that need to be sealed. - Small and compact, easy to store and use, not taking up any space of home or laboratory.Packing list15 x Rubber Stoppers