This is the same cable that is used for computer headsets when they include both a microphone and a stereo headset.
On one end is a pair of 3.5 mm 3 conductor phone plugs, and the other end is terminated in two cords, each with three conductors (tip, ring and sleeve (ground) of each plug) which are stripped and tinned. Total wires is 6.
The plugs are color coded, one green and one red handle. Cable length is 7 feet. The cable insulation is black. The two 3-conductor wires that leave the molded plugs each have a length of 7-3/4" and then merge into a molded "joiner" from which they emerge as zip cord. The stripped ends are also separted into two 3-conductor wires 7-3/4" long, but may be longer if the wire is "unzipped".