Lincoln Electric 10-lb. spool of welding wire is premier 0. 035 hollow wire with flux on the inside. Delivers extra versatility for your welding needs. U. S. A. Wire Material: Flux core, Compatible With: Light-gauge steel, Wire Size (in. ): . 035, Welding Processes: All position welding, Weight (lbs. ): 10, Product Type: Welding wire