The PWM-4A long back shield is a key part of the welding fixture, providing protection for the tungsten electrode and stability for the welding process. Thanks to its elongated design, it effectively shields the electrode, minimizing the influence of external factors and improving shielding gas flow. Made of high quality materials, it is characterized by resistance to high temperature and heavy use. Compatible with the PWM-4A system, it is a reliable choice for professional welders who value precision and equipment durability.