Discontinued Robinair Accessory Tee Fitting For R-134a can be used for installation of oil injectors, vacuum gauges, dye injectors or any tool with a 1/2' ACME fitting. The tee is solid brass construction for durability and the "Bull" fitting has a shreader core installed to prevent pressure or vacuum leaks with nothing attached during service and the female connector side has a core depressor for access to other systems with a shreader. This can be used on the inlet of a recovery unit, as a accessory fitting for a manifold or a vacuum pump.