10PK Cork Stoppers, Size #11 - 21mm Bottom, 27mm Top, 31mm Length - Tapered Shape

Pack of 10 cork stoppers. Size #11 - each stopper measures 31mm in length, has a base diameter measuring 21mm, and a top diameter measuring 27mm. Corks are made of natural bark material and feature a tapered shape. The reliable construction will not crumble or break easily.

Ideal for bottles, flasks and test tubes with a mouth/opening measuring 22-26mm in diameter. Designed for use in professional laboratories but are suitable for a variety of applications in the classroom, home and garage.