HTP America® ER4043 alloy aluminum MIG welding wire on a 4", 1 lb. spool. Used with 100% Argon gas. Features a standard center mounting hole, which measures 5/8" in diameter, and works great in a spool gun. Please not that this is precision wound wire and not random wound wire. Precision layer wound wire is like a spool of thread where each revolution is next to the other, which feeds the wire better and provides a more consistent wire feed rate. Available individually or in 8-packs in the following diameters: .030", .035", and .045".
I ran half a spool of this through a traditional steel Mig liner. Not recommended but it performed flawlessly. Highly recommend this wire and will not buy any other brand.