Banana Jack Keystone Insert with Red/Black Ring Label connects a speaker cable with a banana plug connector to in wall speaker wire. Screw Type Binding Post with adjustable thumb screws can be used with banana plugs or bare wire. Keystone Speaker Wire Coupler with female ports on both sides can connect to speaker cable concealed behind the wall. Gold Plated connectors ensure mission quality. 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.<br><br>Colour: picture color Material: metal + plastic<br><br>Package Contents: 4 * Keystone Banana Jacks (2 red and black circles each)<br><br>Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.