Detial: Banana Plugs Audio Jack Connector, 24k Gold Dual Screw Lock Speaker Connector for a lifetime of use, with a crystal clear signal.Isolates wires which keep them from shorting out and the two set screws keep the wire connection secure Banana plugs make speaker wire installation a breeze and are great to use with A/V receivers, amplifiers, surround sound systems, banana wall plates Banana connectors are gold plated to resist corrosion and the collar is color coded for polarity identification Accepts wire size up to 4mm. Accepts 12 AWG to 18 AWG speaker wire.Double screws locking, no soldering.