1、Great for DIY projects to replace an existing 3.5mm jack<br>2、Used to add input/output port on headphone like Sony MDR mod V6/7506, ATH-M50, amplifier, car and other applications<br>3、Wiring connection: PIN 1- Ground; PIN2- Right Audio; PIN3- Left Audio (Note: number 1, 2,3 is marked on the plastic socket which is close to the solder pin. There is no color code like white and copper to distinguish the PIN but use number)<br>4、The PIN is finished with holes which could provide ample room for tinned wires to loop through to make solid connection<br>5、Package include : 5PCS