Generally, the fittings are different. The EPA requires different fittings on systems using different refrigerants to reduce the possibility of intermixing them. Sent from my iPhone > On Jul 19, 2014, at 16:22, A Griffith <amc.rambler.fan@xxxxxxxxx> wrote: > > I'm looking to get an A/C Gauge set and I see some listed as R-134a (only) and some say R-12. > What is the difference? > > > _______________________________________________ > AMC-list mailing list > AMC-list@xxxxxxxxxxxxxxxxx > http://list.amc-list.com/listinfo.cgi/amc-list-amc-list.com _______________________________________________ AMC-list mailing list AMC-list@xxxxxxxxxxxxxxxxx http://list.amc-list.com/listinfo.cgi/amc-list-amc-list.com