If You Are Planning To Install Audio Throughout Your House, This Is The Cable You'Ll Need. Impact Acoustics In-Wall Speaker Wire Is Made From 65 Strands Of 99.9% High-Purity Copper So It'S Very Flexible And Less Likely To Kink During Installation. This Cable Is Cl2 Rated For Use Inside Walls And Features A Flame-Retardant Jacket That Helps To Diminish The Potential Of Fire Spreading Between Floors. In-Wall Speaker Wire Features Conductors Twisted Upon Each Other That Makes The Cable Round And Much Easier To Pull Throughout The House Than Flat Or Zip-Cord Style Speaker Wire. Inner Conductors Are Color-Coded For Easy Identification.