Copper Wire, Enameled Finish, Soft Temper, Meets NEMA-MW-80 , 0.0213" Diameter, 800' Length Magnet wire with copper core for energy efficiency and resistance to corrosion Polyurethane insulation base layer has a thermal rating of H (155 degrees C/311 F) Polyamide (nylon) insulation top layer to help resist solvents and abrasions Solderable insulation for creating electrical connections at the ends without stripping off the insulation Single poly nylon (SPN) thickness for conductivity and maximum winding in compact areas