1/8″ Female Mini JACK
This series connectors including 3.5 mm female mono mini jack and 3.5 mm female stereo mini jack, They were used to transfer a stereo or mono signal through an audio cable, Can be used on the end of a cable to join with a 3.5 mm male jack in order to extend the length of your cable run from an ipod, or headphones, Also often used to terminate patch cables and headphone cables.