I filled out the contact us form on the powertank website a while back to ask some questions about a custom nitrogen transfill hose that I had been looking for to fill my 20cf tank from a bulk tank. I sent the email at midnight and at 12:15 a guy named Steve replied telling me that they could make the hose with the standard N2 fittings on each end and also answered a few more of my questions. The next day which was Friday, I called in the order and on that following Monday it was in my mailbox from California. I have since ordered several items and Steve has helped me multiple times with getting my tanks right and they are not even Powertanks. Turns out he is the CEO as well. They were exeptional to deal with. Peace.