The AC fitting port adapter retrofit R12 to R134a fit for R12 R22 with R134A charging port 1/4" SAE or 7/16”-20UNF adapter. R12 to R134A retro fit fittings connect to the thread for use with the valve.
R12/R22 to R134A AC Retrofit Fitting Adapter Kit 1/4" to 7/16" UNF Conversion
R12 to R134A AC Retrofit Fitting Adapter Kit, Conversion Adapter
R1234yf to R134a Quick Adapter High Low Side Connection to R134a Quick Coupler
R134a to R1234yf Adapter R1234yf Adapter, R1234yf to R134a Adapter High Low Side
R1234yf to R134a Quick Coupler Adapter High Low Side Conversion Kit Auto AC