Laboratory Grade Rubber Stoppers, 30 Pieces Assorted Tapered Bungs Set, 11…
Laboratory Grade Rubber Stoppers, 30 Pieces Assorted Tapered Bungs Set, 11 Different Sizes from 000# to 8#, Solid Black Lab Supplies. Secure Seal Design: Solid construction with no hole ensures leak-proof performance for flasks, test tubes, bottles, and more.

