6.35mm Male Plug to Dual 3.5mm Stereo Jack Female Socket Splitter Connec
6.35mm Jack (large headphone socket) to create 2 smaller
3.5mm jacks (small headphone socket). Commonly used with amplifiers and CD players so that 2 X
3.5mm plugs can be plugged into a
6.35mm jack, so 2 people can use their headphones at the same time.