Material: Solid rubber stopper is made of high quality rubber, which is very durable, not easy to deform and has good sealing performance.
Size: 2 Assorted Sizes - #5 #7.
Widely used: these rubber stoppers are very suitable for laboratory and industrial use, and can be used as bottle stoppers or pipe stoppers in medicine, chemical industry, scientific research and other industries.
Easy to use: Rubber stopper is tapered, easy to pull and insert, reusable and long in service life.
Packaging includes: 6pcs - #5 size 3pcs,#7 size 3pcs, Can meet your different needs.