FNIRSI® HS-02A Soldering Iron Internal Heat Nut Kit for 3D Printer

FNIRSI® F245 / HS-02A Hot Melt Nut Insertion Tip Kit This kit includes soldering tips compatible with the HS-02A soldering pen and interchangeable with standard F245 universal soldering tips. It supports embedding hot melt nuts or inserts in sizes M2 (also suitable for M2.5), M3, M4, M5, M6, and M8. Commonly used for 3D-printed copper nuts or nut inserts in plastic components. Multi-size Compatibility: Supports various sizes of hot melt nuts — M2 (also fits M2.5), M3, M4, M5, M6, and M8.