... :1.6mm,2.0mm,2.4mm,3.2mm,4.0mmER1070: 1.6mm,2.0mm,2.4mm,3.2mm,4.0mmER1100: 1.6mm,2.0mm,2.4mm,3.2mm,4 ... .0mmER4043:1.6mm,2.0mm,2.4mm.3.2mm,4 ... .9mm,1.0mm,1.2mm,1.6mm,2.0mm, 2.4mm,3.0mm 3) Weight:20kg/spool;6-7kg/spool;2kg/spool;0.45kg/spool ... packing with plastic/metal spool or follow customers' requirments Aluminum Welding rod