Magnet Wire 21 Gauge AWG Enameled Copper 198 Feet Coil Winding and Crafts Green Approximate Length: 198 Feet Average Wire Diameter: 0.0295 Inches (0.748 mm) Enamel Thickness (Build): Single Solderable: Yes Enamel Coating: Modified polyurethane resin with a polyamide (nylon) overcoat