Flux core welding wire for MIG welders. E71T-GS alloy is a high strength flux core wire which produces a deep penetrating weld without shielding gas. Excellent in windy conditions. Tensile strength 80,000 PSI. No shielding gas required. But 75% CO2/25% Argon (C-25) will reduce spatter. Machine polarity DCEN straight polarity (MIG DC -).