High quality 1.0mm Aluminium 4043 MIG Wire, conforming to AWS 5.10 ER4043. Supplied on a 0.5KG reel. A 5% silicon alloy, for use on wrought, sheet, or cast materials of similar composition [. Use with Pure Argon, or where more heat is required 70% Argon 30% Helium]. Do not use where the end product is to be anodised.