Cable Matters (5-Pack) Banana Jack Binding Post Keystone Jack Inserts with Red Ring in White BANANA JACK KEYSTONE INSERT with a red ring label connects a speaker cable with a banana plug connector to in wall speaker wire; Fits a standard opening in a wall plate for keystone jacks SCREW TYPE BINDING POST with adjustable thumb screws can be used with banana plugs or bare wire; Keystone insert with a red ring label connector on both sides provides a professional looking installation in the home or office KEYSTONE SPEAKER WIRE COUPLER with female ports on both sides can connect to speaker cable concealed behind the wall; Connect a speaker to the ideal location near an available wall plate STURDY SNAP-IN CONSTRUCTION of keystone inserts provides a secure connection; Re-usable keystone jack inserts can be easily disconnected and relocated when upgrading or redecorating; Gold-plated binding post connectors provide a reliable connection and distributes authentic audio COST-EFFECTIVE 5-PACK provides enough inserts to connect 5 speakers; Removable keystones offer an alternative to fixed wall plate binding posts that are not replaceable if damaged