4Pcs RJ45 Female To Female CAT6 Network Ethernet LAN Connector Adapter Coupler.
RJ45 Female To Female Shielded CAT6 Network LAN Ethernet Connector. 1/2/4Pcs RJ45 Female To Female Coupler Adapter. Acts as a coupler to join and extend two Rj45 CAT 5E / 6 network cables together. hope you could understand.