Hiya Mosschops, as Cath said, they are the tanks for the Mega Tank atties.......as for the leaking mentioned ... :- "If the fluid seems to be leaking from the atomizers- it is not, the end cap just needs replacing. We have included some spare caps with your purchase." I have yet to get a leak from my mega tanks, I haven't even needed to dispose of one of the caps yet, I'm running two with the hard caps and two with the soft caps. I've also found the Mega Tanks to give better flavour than the standard tanks.
