AC Dye Injector with Shut-Off Valve, AC Oil Injector for R1234yf R134a R410a, 1234yf Dye Injector with Backflow Prevention Function, AC Dye Oil Injector Kit with R1234yf R134a Couplers R410a Adapter. Wide Application : Our ac oil injector tool can be used for r134a, r1234yf and r410 system.
