Type 6011 Mild Steel: All position electrode. Use when you are unable to prepare a welding surface. Its deep penetration allows welds through rust, scale, oil and dirt. For expert welders.
Type 6013 Mild Steel: All position electrode. Best used with clean or prepared welding surface. Excellent for low heat applications designed for general purpose. For novice welders.
Type 7018 Low Hydrogen: All position electrode. Best used with clean or prepared welding surface with Medium penetration. Designed to produce X-ray quality welds. For skilled welders.