Premium quality gas-less E71T-GS flux-cored (FCW) mild steel MIG welding wire 10-lb roll..Conformed to AWS A5.20/ASME SF A5.20/E71T-GS. 10-lb weight of welding wire. 8-in spool, 2-in center hole. Typical deposited metal chemical composition %: C=0.20, Si=0.32, Mn=0.77, P=0.011, S=0.002, Cr=0.01, Mo=0.01, Ni=0.01, Cu=0.01, V=0.002, Remain=Fe..Self-shielded; no welding protection gases needed. Single-pass fillet and lap welding. Vacuumed aluminum foil packaging..Available wire diameters: 0.030" (0.8mm), 0.035" (0.9mm) and 0.045" (1.2mm). Pack of 1 and 2 of 10-lb spool. With volume discount; Buy More Save More!.U.S. based welding and hardware supplier. Strong technical support with experienced customer service to address buyer's any question.