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!
Please note: We will be closed on Friday 27-Jun-25 until Tuesday 2-Jul-25. Shipping orders placed during this time will be shipped out on 2-Jul-25. For locals wanting supplies before the weekend, I can be available through the week up to Thursday evening. Feel free to reach out to me by email if you have any questions or would like to arrange an alternate time/date for pickup.