28 Gauge Enameled Magnet Wire is made of high quality copper and good coating with enamel.Perfect enameled magnet wire for implementing into your science projects/experiments or personal DIY,used by engineers and hobbyists alike! Product Details Size: 4 oz(527 feet) Color: Natural Diameter: 0.0122 inches(0.31mm) Tolerance: +/-0.05mm Item Weight: 1 item for 4 ounces Gauge: 28AWG Specification Met: NEMA(NEMA Description: MW-80-C) Insulation type: Solder able Polyurethane Overcoat Build: Single Min-Nom Maximum Resistance At 20℃ Ω/km:222.8 High Quality enameled Copper Wire!Durable and not break while winding the coils.Highly Efficient! Magnet wire is copper wire that coated with a thin layer of insulated enamel.This 28AWG magnet wire is 4 ounces(527 feet). This enamelled copper wire the insulation is made from Solderable Polyurethane,and protects the coiled wire from short-circuiting.Temperature rating 155°C (311°F) makes it suitable for several thermal overload applications.Raw copper is drawn to meet specific size requirements based on NEMA MW-35-C standard. 28 gauge enameled magnet wire: Wrapped in spool and color is natural.Outside diameter 0.0122"for perfect thickness. magnetic copper wire is widely used in the construction of transformers,wound coils,motors,solenoids,instruments,inductors,speakers,electromagnets,and other applications that require tight coils of insulated wire.