AC Oil Dye Injector, R134A Compressor Oil Injector Kit | with Snap Quick Coupler, 2 OZ A/C Injection Air Conditioning HVAC Tool with 1/4" SAE Male and Female for R134a R12 R22. Compatible With: AC oil dye injector fit for R134A R12 R22 automotive air conditioning refrigeration system, pure liquid refrigerant oil filling pipe.
