Bnc male plug to 2xrca female jacks adapter this bnc male plug to 2xrca female jacks adapter converts two rca male plugs into a single bnc male plug.Allows to interconnect between different cable inputs and outputs securely transmits bnc audio or video signals to rca good to use with cctv system connector 1: bnc male plug connector 2: 2xrca female jacks