7 funtions: Use the spot welding pulling hammer connected with the pulling pad to do repair work. Round meson welding is mainly suitable for door repair Wavy wire welding is mainly used for linear dent repair. Press the car body bumping point with a flat head. Use single-side welding electrode to compact and weld two steel plates Carbon can be used to heat shrink and soften the plate. The stud welding is suitable for deep dent repairing.