AC Leak Detector Kit, R1234yf R134a R410a AC Oil UV Dye Injector Kit Refrigerant Leak Detector Tool Low Side Quick Coupler Mini Split Adapter Glasses Flashlight (Valuable). Undefined: our refrigerant leak detector adopts advanced leak detection technology and is able to detect R22, R134A, R404a, R410A and most refrigerants, compatible with HFC and mixtures; The main body of the AC oil dye injector is made of aluminum alloy, 1/ 4" connectors compatible with SAE and quick connectors are made of brass, heavy duty materials ensuring durable, products.