Im wanting to go back to air. So my nitrogen is up for trade. Im wanting to get 2 air zenith compressors or enough money to buy two. I have two nitrogen set ups for trade or to sell. Whichever one works. One set up is two smaller bottles, brackets, and 2 bottle uses on a new harris regulator, and a big bottle with brackets and a harris regulator. I also have an extra spare big bottle. Hit me back if anybodies interested.