Forney 42294 Mig Wire, Aluminum Alloy ER5356.035-Diameter, 1-Pound Spool Popular all position aluminum welding MIG wire for general purpose applications providing stronger welds and easier feeding Aluminum welding wire recommended for welding 5050, 5052, 5454 and 5456 materials Recommend for use with spool guns for best results Excellent for automotive bumpers and supports, formed truck panels and other aluminum structural frames Requires Argon, Argon mix or Argon Helium mix shielding gas (not included)