Autocraft 309LSi is a premium quality, low carbon 24% Cr / 13% Ni stainless steel wire for the Gas Metal Arc Welding (GMAW) of matching 309L types stainless steel. 15kg Spools 721276 – 0.9mm 721277 – 1.2mm A Stainless Steel Wire for the GMA Welding of 309 and 309L Type Stainless Steel