1.Fine-control diaphragm pump is employed for powerful airflow; the smaller the nozzle of the gun,the stronger the airflow 2.The hot air gun’s heating element employs brand new columned heating core developed with a ceramic process, having strong stability, resistance to impact and dropping, and extraordinarily vibration-mitigation ability. The smaller the gun nozzle installed in the machine, the bigger the pressure and stronger the force, suitable for desoldering of single small soldering spots.3.Air gun handle wire employs a high-temperature silicone wire (undamaged when 300o soldering tip contacts silicone wire for 30 seconds).