Cork Stoppers
https://theclassroomstore.com/products/Cork_Stoppers
Economical and a great substitute for rubber stoppers for test tubes.
Price
Qty
40086 - Pkg.
13.95
pkg
Economical and a great substitute for rubber stoppers for test tubes. These durable stoppers are conveniently packaged in an easy-to-store plastic container. Great for art projects! 40 assorted-sized cork stoppers per package.
