HELVI MAXITECH EVO 506 + F4W Welding Machines Microprocessor-controlled, multi-process welding inverter compact or with separate wire feeder suitable for MIG/MAG (Standard: manual, synergic. Optional: pulse, double-pulse and root welding), TIG-DC (continuous and pulse) and MMA welding. The large 3.3” display shows all the welding parameters, and makes their setting easy and intuitive. In synergic/pulse MIG/MAG welding, the microprocessor ensures easy and quick setting of the programs thus always guaranteeing optimal arc stability and high welding quality.