Mild steel, "Flexiweld", all purpose electrode used in all positions. Deep penetrating rod for carbon and galvanized steel. For use with a DC (Direct Current) welder and runs on DCEP (reverse polarity). Ideal for welding through light to medium amounts of dirt, rust, or paint. No. 31610: AWS Classification: E6010, Diameter: 1/8 In., Length: 14 In., Weight: 10 Lb., Recommended Polarity: DCEP Reverse, Tensile Strength: 80,000 psi, Pkg Qty: 1, Package Type: Box