HIGH QUALITY 2 Conductor Speaker Wire Flexible Red PVC Jacket with Black Polarity Stripe Allows for Fast, Easy and Accurate Installations 18 AWG, 16 Strands of Pure Copper Wire per Channel Providing Clarity and Undistorted Signals to all Sound System 99.99 % Oxygen Free Copper (OFC) Conductors. Compatible with Bare Wire Connectors, Banana Plugs, Spade Tips or Bent Pin Connectors UL Safety Certified, NEC 725 Class 2 Rated for Home and Commercial Use Sequentially Marked Every Two Feet in Descending Order From the Start of the Reel to the Core