Solder type 3.5mm stereo 3 pole male plug jack replacement. Solder wiring diagram: PIN 1 - Left channel; PIN 2 - Right channel; PIN 3 - Ground.(Refer to the 2nd product image.) Suitable for cable with diameter up to 5mm. Perfect replacement 3.5mm male plug jack for repair worn-out or broken headphone headset earphone audio cable plug connector. Easy to handle, you really don't have to be a professional to do this. Insert the cables into the sleeve, solder the bare wire and the plug together, and then twist and lock in place. Package contents: 4-Pack 3.5mm replacement plug jack, solder type stereo 3 pole male plug. Perfect replacement 3.5mm male plug jack for repair worn-out or broken headphone headset earphone audio cable plug connector. Solder type 3.5mm stereo 3 pole male plug jack replacement. Solder wiring diagram: PIN 1 - Left channel; PIN 2 - Right channel; PIN 3 - Ground.(Refer to the 2nd product image.) Suitable for cable with diameter up to 5mm. Easy to handle, you really don't have to be a professional to do this. Insert the cables into the sleeve, solder the bare wire and the plug together, and then twist and lock in place. Package contents: 4-Pack 3.5mm replacement plug jack, solder type stereo 3 pole male plug.