20 Gauge wire: 20/2 cable rated CL2 for in-wall use, complies with fire safety for use inside the walls. This 20 gauge cable comes wrapped around a hard plastic spool that makes dispensing convenient. Each color is 100FT, easy cut, it's easy to strip and cut into any length based on needs. Premium OFC wire: The cable is made of high-strand count oxygen free copper (0.2mm x 16 strands) 20 AWG conductors. 99.95% OXYGEN FREE COPPER wires, not copper clad aluminum. OFC provides maximum conductivity, durability and antioxidation to ensure the highest performance and reliability of the products. Perfect jacket: Tough, yet flexible white insulated jacket is color coded for polarity. Each conductor has an individual, color-coded jacket enclosed within the outer white CL2 jacket, making it safe for use within the walls of residential class buildings. Applicable to: Suitable for stereo speakers, car stereo speakers, indoor appliances, small electric tools, instruments, meters and bro