This model has 3 functions, working as MIG, TIG and MMA welding Our MIG-140 welder is MIG/TIG/MMA gas/no gas, 3 in 1 type DC mig welder. It has 3 functions, MIG, TIG and MMA welding. In MIG mode, it could work with either gas/ flux welding (there’s selection button on front panel). There’s also selection on front panel of Synergic and manual, it means that you could either select Synergic function, meaning use on knob adjusting (very easy for users, both output voltage and current would be matched automatically when in working) or select manual function, meaning both output voltage and output current could be adjusted by users themselves if they would like to weld according to their own welding habit. In TIG lift mode, it needs to work with TIG lift torch( you will need to buy TIG lift torch separately). In MMA mode, it could use electrode from 1.6 to max 3.2mm to weld carbon steel. The advantage of the welder is as below: IGBT inverting technology, reliable and stable. Good tolerance when in working not stable working voltage. Electric choke control, less spattering, deep penetration and good formation. Easy to start arc. Synergic and manual adjustment, meet different users requirements. Comparing to traditional welders, it greatly reduces the qty of electrical components used, and improve the reliability of circuit. The efficiency of this welder could reach more than 85%. Professional model for durable use Variable wire speed control Works from a standard 13amp plug Turbo fan cooled Gasless 3.5 meter welding cable (1.6m for earth clamp & 2m for welding torch) Arc torch cable  2m Thermal protection ACCESSORIES INCLUDED; Earth clamp Clipping Hammer Wire brush Helmet. flux core SPECIFICATIONS Mains voltage; 240 V no load voltage; 44-62v max working wire : 1Kg Rated duty cycle; 25% Adjustment position; 4 Insulation; F Input capacity (kva); 2.4 Dimensions (L,W,H); 330mm x 150mm x 170mm Weight; 6 kgs