Feature●Approximate Length: 315 Feet●Average Wire Diameter: 0.0340 inches (0.863 mm)●Enamel Thickness (Build): Double (Heavy)●Solderable: Enamel coating must be scraped off before soldering●Enamel Coating: Base coat: modified polyester resin, Overcoat: modified amide imide resinDescription Magnet wire is a solid core copper wire coated with a very thin layer of enamel insulation. It is used in the construction of transformers, inductors, motors, speakers, electromagnets, and other applications that require tight coils of insulated wire.