HELVI TP 220 XL Welding Machines Microprocessor-controlled welding inverter suitable for DC controlled MIG/MAG, TIG and STICK WELDING, which guarantees excellent stability of the welding arc and no welding spatters. In STICK mode, the microprocessor controls the Hot Start, Arc Force and Anti-sticking functions. In TIG mode, it controls the Lift Arc function and in MIG mode it allows either manual or fully synergic welding.