1. **PORTABLE AND HIGH TEMPERATURE RESISTANT:** The induction coil kit, consisting of brass wire with a 2.5mm brass core, can withstand temperatures up to 1200°C. This is the most commonly used prefabricated coil and comes with its own storage toolbox, allowing for easy portability while working and keeping your workspace clean and organized. 2. **4-PIECE COIL KIT:** The kit includes four coils: one with a diameter of 0.79 inches (20mm), one with a diameter of 1.18 inches (30mm), one with a diameter of 1.57 inches (40mm), and one flat round cake coil. This variety of coil models and sizes adapts to various work needs, streamlining your workflow. 3. **LONG LIFE:** Each coil is resistant to overheating and premature wear, ensuring durability for at least hundreds of uses. 4. **GREAT FLEXIBILITY:** These induction coils are flexible and can be bent for various purposes. Simply bend them to achieve your desired configuration. 5. **ADVANCED INSULATION:** The coils are insulated for user protection and coated with a wear-resistant coating. Replace the coil if the insulation is damaged. 6. **HIGH EFFICIENCY PLATING:** Induction coil kits are plated to prevent oxidation and ensure optimal contact, providing maximum efficiency. 7. **WIDE APPLICATION:** The induction heater coil is primarily used to heat nuts and rusty screws for loosening. It can also be used for heat treatment of automobiles, machinery, and various small metal parts such as gears, belts, and bearings. **Item Type:** Induction Heater Coil Kit **Specification:** 4 sets of 2.5mm brass core coil combination (20mm, 30mm, 40mm, and one flat round cake coil) **Material:** Brass **Brass Core:** Approx. 2.5mm / 0.1in **Application:** Used to remove rusty bolts and nuts **Package Includes:** 4 x Induction Heater Coils 1 x Storage Box Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-dadangjia