This adapter has an F female to an F female connector. It Can be used inside or outside. They are nickel plated to prevent water damage and rust. Accommodates most Male F-Type connectors and wall plates for indoor and outdoor settings alike. Compatibility - Works with most F-Pin digital a/v cables - Intended for devices with F-Type ports, like a cable box, TV, satellite receiver, VCR, cable modem, off-air antenna & more Installation Plug-&-Play: Simply connect your existing F-Pin cables to either Female end of the connector for quick installation Notes - Also known as a barrel connector, barrel splice, F-Pin coupler, splice connector or F-Type adapter - To fit wall plates, connector ends are purposely uneven