Specifications: Size: 13.2 x 5.7 x 6.1 inches (33.5 x 14.5 x 15.5 cm); Weight: 9.8 lbs (4.2 kg); Applicable welding rod: 0.06 - 0.8 / 0.9 / 1.0 cm).Voltage: AC100V/AC200V Frequency: 50Hz/60Hz Output Current Range: (100V) 20-80A, (200V) 20-120ASmall welding can be used for welding mild steel, carbon steel, stainless steel and cast iron. You can use it for DIY and repairing projects at home, such as bicycles and metal iron doors.It is a very ideal DIY tool.