This multifunctional soldering iron set combines automatic solder feeding, fast heat up and three-in-one capability for welding, cutting and rust removal. It is designed for industrial, automotive and creative metalworking tasks. Key benefits - Automatic soldering: includes a removable tin wire holder and tin coil. Install the coil on the holder, lightly press the trigger, and the tin wire automatically feeds to the joint. The natural mica heating core heats quickly to support efficient soldering. - Fast heating and wide range: the 900 m soldering tool can quickly heat to 200C-450C, covering most daily soldering needs. - 3-in-1 functionality: welding, cutting and rust removal in one machine. Compatible with a variety of metal types to simplify workflows. - Real-time monitoring: side-split design enables real-time usage status checks, ensuring a stable welding process and improved work efficiency. - Ergonomic one-handed operation: lightweight, well balanced handle for safe and comfortable one‑handed control. Reduces fatigue and improves precision during extended use. - Comprehensive kit: available with inner and outer heat options; all kits include gloves for protection. Use scenarios - Electronics assembly and component repair: precise soldering for small parts, wires and PCB connections. - Automotive and metalworking: quick repairs, rust removal and light cutting on panels or frames. - Prototyping and creative projects: fabricating and joining metal parts for custom builds and art pieces.