New, 4 Hydrogen FX cells producing 5.5 liters of HHO at 65 amps running a 2 HP engine, I am selling each cell on Ebay for only .00 thats about the cost to make one yourself. cgi.ebay.com HHO torch experiments melting metal, Hydrogen FX is a professionally built 316 stainless steal hydrogen electrolyzer for use as a fuel saving device or small HHO torch. All internal parts are built form computer stamped 16 gauge 316 stainless steal guaranteed to last. the outer case is ABS plastic ...