Anybody know what this gauge set is used for?

MrMag00

I picked this up awhile back, mainly for the case, but before I scrap the set, might be nice to know if it is some specialty service kit that is worth millions. My initial guess is for servicing A/C or similar. Maybe one of you guys have used one of these and know what it is for. 

Edit, after some dressing of the threads, fits a helium bottle or argon.

Knifecollector

ATLAS-COPCO-EPIROC-HAMMER-BREAKER-NITROGEN-CHARGE-KIT-

MrMag00

Thanks, That was quick. I doubt if it is in high demand LOL. Probably nothing I will ever use anyway. I contacted the company to get more info.  Then decide to part out the kit, keep the brass for turning and gauges for whatever. And I have a better use for the case.