It protects the welding wire roller from wires, dust and oils present in the environment, has a covering and wire driving unit with 2-roller (280 K - 400 S) and 4-roller ( 500 S ) handling arm. It provides welding of iron aluminium and stainless steel having a thin and medium ( 500 S ) and thick ( 280 K - 400 S ) width. It has 2 and 4 grade trigger options. They are half automatic air cooled ( 500 S ) and water cooled ( 280 K– 400 S ) welding machines with thermic protection circuit, soft-arc feature that minimizes the bounding during the beginning of welding, burn-back feature that inhibits the wire to be attached to the part, and method welding feature in which the time can be set.