Hobart ER 4043 aluminum TIG welding wire delivers reliable performance for general-purpose aluminum applications. This 1/8-inch diameter wire comes in convenient 36-inch lengths, packaged in a 10-pound box for extended welding projects. ER 4043 alloy provides excellent fluidity and crack resistance, making it ideal for welding 6061, 6063, and cast aluminum. Perfect for fabricators, repair shops, and welders working on automotive, marine, and structural aluminum components.