●OFC(OXYGEN FREE COPPER) ? offer the best signal frequency and reliability in terms of corrosion resistance ●SOFT TOUCH JACKET - The jacket on our cable is designed with the installer in mind. The flexibility of this jacket allows for easy routing and has a low memory. ●EASY POLARITY IDENTIFICATION - This two-color jacket allows for easy polarity identification. Making a polarity mistake could be damaging to your audio equipment.Black and purple looks very nice! ●CUSTOM INSTALLATIONS ? You can use this speaker wire to pair with banana plugs, spade tips, or bent pin connectors to connect your speakers to your A/V receiver or amplifier with this KCT Series speaker wire. ●This product go through many states of testing to ensure the highest performance and reliability of the products.