DescriptionAre 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:3.00X2.30X1.80cm/1.18X0.90X0.71in.- 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 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 list: 15 x Rubber Stoppers