CESS 3.5mm 1/8 Inch Female Stereo TRS Balanced Socket with Switch (LW) (4 Pack) Stereo 3-Pole 3.5mm 1/8 inch female panel/chassis mount socket Soldering type.Use for microphone jack, earphone plug, Audio Video AV PC. Nickel plated for maximum signal transfer & durability Material :Copper Package Includes 4 Pieces