This predrilled rubber bung will fit snugly into a Fermonster carboy or the lid of a plastic primary fermenter (drilling may be required). Simply insert, attach your airlock and you are protecting your fermentation!
This predrilled rubber bung will fit snugly into a Fermonster carboy or the lid of a plastic primary fermenter (drilling may be required). Simply insert, attach your airlock and you are protecting your fermentation!