This listing is for a set of six Miller MIG welders, model 350P, along with some additional accessories. These welders are designed for use with all metals and are perfect for a heavy-duty welding job. The welding process is MIG, or metal-inertial gas, which is a popular choice for professionals. The polarity of the welders is AC/DC, making them compatible with a wide range of equipment.The unit quantity of six welders is perfect for a business or industrial setting, and they are sure to get the job done efficiently. The brand of the welders is Miller, a trusted name in the industry. In addition to the welders, each comes with a whip, making it a complete package for your welding needs.