Mild Steel Specifications: Wire diameters: 0.035 (0.9mm), 10-Lb spool, pack of 2 rolls Advantage: Small splashing, high feed ability, no pores, good weld bead appearance, easy to weld Features: Copper plating and layered winding. Especially fit for metal plate applications or structural plate steel with an appropriate amount of rust oil or oxide skin on the surface Application: Fit for general workshop applications in agricultural tool manufacturing, construction engineering, shaft construction, storage tanks, truck bodies, and poorly assembled or rusted panels Shielding gas is required: 80% Ar + 20% CO2 or 100% CO2.