Cable Matters (5-Pack) Gold-Plated RCA Keystone Jack Inserts in White RCA KEYSTONE INSERT with white center jack joins cables with RCA plugs; Connects equipment with RCA ports like a subwoofer, stereo receiver, or other equipment with RCA component audio and video ports; Fits a standard opening in a wall plate for keystone jacks RCA COUPLER with female ports on both sides connects to an RCA cable concealed behind the wall; Connect a subwoofer to the ideal location near an available wall plate STURDY SNAP-IN CONSTRUCTION of feed-through RCA keystone provides a secure connection; Re-usable keystone jack inserts can be easily disconnected and relocated when upgrading or redecorating; Gold-plated RCA connectors provide a reliable connection and distribute authentic audio and video TIDY INSTALLATION of RCA female to female keystone insert with a white center connector on both sides provides a professional looking installation in the home or office COST-EFFECTIVE 5-PACK provides enough inserts to connect 5 sound system component cables