25 litre brewing bucket, 5 litre brewing bucket plus two fermentation airlocks by Almost Off Grid. Both the 25 litre bucket and 5 litre bucket come complete with tight fitting lids, pre-bored with holes and fitted with a rubber grommets. The rubber grommets ensure that, when the airlocks are fitted into the lid holes, they create a tight seal. The two airlocks are designed to allow air out of the buckets during fermentation without allowing fruit flies or contamination in. The red caps are designed to be loose fitting rather than airtight. Having a larger and smaller bucket makes brewing from scratch far easier. Very often when you are making beer, wine, cider or mead, you include fruit or flowers in the first fermentation and then strain into the smaller vessel. Crafted from high-quality, food-grade materials, our fermentation buckets are sturdy and built to last. They can be reused countless times to make your own beer, cider, mead and wine.