Open screw type Banana Plug accept bare wire or spades, accept 18 to 12 AWG speaker wires. Color coded black/red rings for maintaining proper polarity/ installation 14 & 16 gauge speaker wire has to fold the wire over, then tighten the banana plug, it will not affect the sound quality. Secure, positive contact with binding posts. : 24K gold plated No soldering required, HIGH QUALITY Colour: red + blue + gold Material: copper Size: 40mm Package Contents: 12 * Connector Only the above package content, other products are not included. Note: Light reflection 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. No soldering required, HIGH QUALITY Color coded black/red rings for maintaining proper polarity/ installation 14 & 16 gauge speaker wire has to fold the wire over, then tighten the banana plug, it will not affect the sound quality. : 24K gold plated Open screw type Banana Plug accept bare wire or spades, accept 18 to 12 AWG speaker wires. Secure, positive contact with binding posts.