“Plastic Trial Jar” has been added to your basket. View basket Favourite Spare Air-Lock Grommet £1.40 6 in stock Favourite Spare Air-Lock Grommet quantity Add to basket Summary Specs Description Grommet used to hold airlock usually in the lid on a brewing vessel or plastic demi johns. Related products AccessoriesYoungs Leaf Hops Vacuum Packed Challenger 113g £9.20 5 in stockAdd to basket AccessoriesPlastic Trial Jar £5.75 1 in stockAdd to basket AccessoriesSodium Metabisulphite 100G £2.75 12 in stockAdd to basket