Aurum Cables 5-pack 3.5mm to 3.5 mm Stereo Audio Coupler Adapter - Female to Female 3.5mm Stereo Jack (female) to 3.5mm Stereo Jack (female) Coupler Adaptor. Convenient 5-pack stereo couplers provide spare or replacement couplers to use on different audio systems This coupler adaptor is designed to couple audio cables with mini stereo phone plugs Connect two 3.5mm audio cables to extend the connection. Gold plated connectors increase conductivity and help reduce corrosion