100 Meters - 32 SWG Enameled Copper Wire - 99.9% Pure Copper - 0.27 Diameter Material: 99.9% Copper, Shape: Round, Enameled: Yes, Color: Copper, Hardness: Dead Soft. Magnet wire or enameled copper wire is with a layer of insulation, and used in a following applications: transformers, wound coils, motors, solenoids and instruments. The insulation is made from modified polyurethane and protects the coiled wire from short-circuiting.