18 AWG electrical wire UL Approved, PVC Insulation, Voltage Rating: 300 Volts , Rated Temperature: 80 C | Tinned copper inner core can maintain copper wire for a long time does not oxidize. Protect them from corrosion and make it easier to solder and extend the service life of the hook up wire | Due to the fine stranded core, made of multiple strands of wire. The stranded wire is very flexible to strip and solders. Super low impedance for a highly efficient connection | hook up stranded wire kit is suitable for various internal wiring of appliances and electronics | 6 Rolls 16.4 feet per roll; available in 6 colors: black, red, yellow, blue, white, green in one box with holes for easy pull out the wire