.030 NR-211, 10 LB Spool, Inner Shield Flux-Core Welding Wire, Designed For Mig Wire Feed Welders, Delivers Clean Welds With Excellent Bead Appearance, Fast Freezing Characteristics Accommodate Poor Fit Up, Low Spatter & Excellent Weld & Bead Appearance, Good Slag Removal, Produces Quality Welds In Moderate Wind Conditions With No Tenting.