... , forced air-cooling structure; with switch to adjust output voltage, easy to operate and adjust. ModelBX6-250Rated input voltage (V)220/380Rated ... ;220V/380V input connection, with switch to adjust output voltage, easy to operate and adjust;Suitable for welding small work pieces, small ... to carry;Suitable for welding median small workpieces. BX6-250 Portable Ac Arc Welding Machine