Direct welding enameled copper wire 0.21mm — 500g, polyester-insulated

500g spool of direct welding enameled copper wire with a diameter of 0.21mm. Composition: Internal Copper, Surface Insulating Paint, Polyester Patent Leather. Key qualities include high durability, natural copper color, and resistance to breakage during winding. The wire is direct-weldable — it can be welded without scraping or damaging the insulation layer. Suitable for making transformers, inductors, motors, speakers, potentiometers and other magnet wires; it converts electrical current into magnetic fields. Common applications: transformer production, winding coils, motor windings, solenoids, inductive coils, speaker coils, electromagnets and insulated wire coils.