Universal Better Bottle Stopper - Solid (SRS)
This solid universal stopper is a white rubber bung with a long taper for a snug fit and better seal. It also has a lip to prevent the bung from falling into the carboy.
Fits Better Bottle carboys. 1 11/16" x 2 3/8"
Frequently purchased with an airlock.
Also available as a drilled universal medium stopper.