24Pcs Solid Rubber Stopper 11 Assorted Sizes 000# – 8# for Flask, Plug Holes, La
24Pcs Solid Rubber Stopper 11 Assorted Sizes 000# – 8# for Flask, Plug Holes, Lab Seal Rubber Stoppers. 11 Assorted Sizes: #000, #00, #0, #1, #2, #3, #4, #5, #6, #7, 8#, wide range of options for your application.