Stereo Coupler 3.5mm F-F

3.5MM Stereo Female Plug to 3.5MM Stereo Female Plug
Used to connect two Cables together or a cable and adapters.
Called:
3.5mm Stereo Coupler.
1/8" Stereo Coupler.
Coupler connects two 1/8" stereo phone plugs.
* Accepts two 1/8" stereo phone plugs