3 are water, 1 is CO2. All empty. Structurally intact, but grubby and I provide no warranty as to their functionality! Free to a good home, if you want to sell them on I don't mind at all, go for it!
By taking these off me you accept and agree that these may be classed as hazardous waste and they may require specialist disposal. I take no responsibility for onward disposal or usage.
Collection from BS65EN.