gohantee R12 AC Oil dye Injector for R134a R22 2oz A/C Air Conditioning blue

[USAGE] This ac dye injector makes oil injecting into R12,R22,R134a ,2oz, Use injector to add 2 oz. of oil to a R-12 air conditioning system under pressure or during service. [PREMIUM QUALITY] The oil injector made of high quality aluminum alloy.