The HDMI (F) to HDMI (F) Coupler - Female to Female is used to connect two HDMI cables. The most typical application is when a an existing installed cable needs to extended further the HDMI coupler avoids the need to re-install a complete new cable and allows for the use if another cable of the required length to be connected to the existing cable by using the coupler in between them.
Tech specs
Interface
HDMI
Full specification
* Moulded design for durability* Transmits uncompressed Audio and Video.* Warranty: Lifetime