Rubber Bung 1G (Bored) £1.10 188 in stock Rubber Bung 1G (Bored) quantity Add to basket Summary Specs Description Rubber bung with hole to take airlock. Suitable for use with demi john. Related products AccessoriesNylon Bottle Brush £4.70 15 in stockAdd to basket AccessoriesHydrometer £5.40 13 in stockAdd to basket AccessoriesCitric Acid 100G £2.20 15 in stockAdd to basket