Leak Detector 3 Sensitivity Level 0.05 oz/yr R-134a 0.025 oz/yr R-22 For Use With All CFC HFC and HCFC Non-Flammable Refrigerants Including R12 R22 R134a R404a R410a R502 R507 and Many Others Includes (4) AA Batteries Hard Carrying Case Leak Test Vial Sensor Filters