Photo 1 of Boltigen R1234yf Dye Injector, AC Dye Injector with Shut-Off Valve, AC Oil Injector for R1234yf R134a, Upgraded R1234yf Oil Injector Kit with Adjustable R1234yf R134a Quick Couplers, Oil Checkers

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Photo 1 of Boltigen R1234yf Dye Injector, AC Dye Injector with Shut-Off Valve, AC Oil Injector for R1234yf R134a, Upgraded R1234yf Oil Injector Kit with Adjustable R1234yf R134a Quick Couplers, Oil CheckersPhoto 2 of Boltigen R1234yf Dye Injector, AC Dye Injector with Shut-Off Valve, AC Oil Injector for R1234yf R134a, Upgraded R1234yf Oil Injector Kit with Adjustable R1234yf R134a Quick Couplers, Oil Checkers