The GiantTech TIG200S DC TIG Welder is a serious tig welding machine for the craftsman and professional both. The TIG200S is a portable MOSFET inverter weighing just 19 pounds. The TIG200S DC TIG Welder is capable of welding most all metals except for ALUMINUM and is the ideal tool for those in the metal fabrication and construction industries where machine portability is crucial. The TIG200S DC TIG Welder has an adjustable current between 20A and 200A which makes it a must have in the automotive body repair industry. Consumables are readily available at your local welding supply store. All MOSFET power transistors are manufactured by either FUJI or TOSHIBA of Japan, chosen for their reliability and longevity in the toughest of environments. With a 3 year parts and labor warranty to back your purchase you will enjoy many years of reliable welding operations.