3.5mm stereo jack to 3.5mm stereo jack coupler make the right connection with our 3.5mm couplers.This coupler is ideal for connecting two existing 3.5mm audio cables together.Connectors: 3.5mm stereo female to 3.5mm stereo female.Used to splice together two existing cables.Black molded plastic construction nickel-plated contacts connects 2 male 3.5mm stereo cables use with pc, stereo, mp3 players external length / height: 37mm