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This is no doubt the most complete Hydrogen on Demand System you will find for these Prices - If you can find these HHO dry cells or hho dry cell kits for Less they are not the same quality ! To the best of my knowledge hho2u.com is the only one with this same hho dry cell complete kit.
These hho dry cells come with 3/8" fittings and will produce up to 1.5 LPMs at under 20 amps.