High End 65 Strand 16/2 In Wall Speaker Wire 500 ft CL2 Rated UL Listed Audiophile Grade 500ft 16 Awg 2 Conductor High 65 strand (compared to "average grade" 26-41 strand 16 awg) 99.99% Oxygen Free Copper CL2 Rated In Wall/Ceiling Applications Pro-Installer Series Flexible No Kink Jacket UL Listed & Certified Rohs