I am stuck in my old way of using a SS wand with a stone on the end and pumping O2.
Decided to go this route about a year or so ago, when I bought my Chillzilla, but never got out of the old way.
This is the MoreBeer model FE390, I have added the Tri-clover fittings as shown. Brand new, never used, only leak checked with star-san solution.
Asking $100 for the set-up with Tri-Clover as shown or $80 with 1/2" barb ends.
PayPal preferred. Free ship in lower 48 either way.