CEMONT PRECISA 420 S* / 420 SP* Welding Machines Synergic adjustment, microprocessor- controlled generator for MIG / MAG welding of non-alloy, stainless steel with smooth current. Suitable fro weld-brazing copper-alloy based materials and for welding thin materials. Extremely easy to adjust. Modular (it can be air or water cooled) MMA function (electrode)