Specially designed replacement heating core for portable wireless mini welding and soldering tools. Integrated DC power supply and internal heating structure deliver rapid and stable heating performance for efficient soldering work. High-quality heat-resistant materials ensure strong durability and long service life. Stable temperature, less thermal deformation, and improved safety during continuous use. Perfect as a spare or replacement internal heating core for electronics maintenance, hobby work, jewelry repair, and on-the-go soldering applications. The integrated DC power supply compatible design ensures stable output and reliable operation with your portable mini welding tool. Delivers consistent heating performance and reduces power loss for long-term use. Due to different batches, there may be differences in product appearance, color, and printed text, which will not affect the use. Color: Blue Material: Stainless Steel Package Contents: 1*Soldering Iron Kit Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.