US Forge Welding Aluminum MIG Wire .030 1-Pound Spool #00678 High magnesium content helps increase weld strength and decrease crack sensitivity when welding on base metals Excellent for repair of automotive, truck, and bus parts Also for use with tanks, pipes, ladders, shelves, refrigeration equipment, foundry patterns and many other aluminum structures Repair of machining errors and buildup of missing sections of casting, extrusions, and plates