Mini Split System A/C Special Large Low-Side ADAPTER, 5/16"FM X 1/4"MF CPS AD87

5/16" (R410A) FEMALE FLARE WITH VALVE CORE DEPRESSOR X 1/4" MALE FLARE. The female side of the brass adapter has a valve CORE depressor IN IT so it will push in or depress the existing schrader valve and the male side ALSO has a schrader valve IN IT.