These are the Plastic Banana Plug Connectors in Black and Red. The connectors are easy to use and made using a lightweight reverse threaded plastic housing and sturdy metal plug construction. It can accept speaker wire up to 10 gauge and utilizes a closed screw type installation. Start by stripping back the cable jacket from your speaker wire. Then strip the individual wires. Unscrew each of the banana plugs. Then, using a small screwdriver, unscrew the fasteners. Insert the speaker wire into the plug and tighten the fasteners. Then screw the plastic housing back onto the connector. The Plastic Banana Plug Connectors will simplify your home theater setup and provide crisp audio fidelity. For more information on our products, please contact our customer service department at 888-519-9505. For all your cable and connector needs, choose Show Me Cables