HSS metallic circular saw blade are the good tool for cutting ... have two types one is TIN, another is steam treated. HSS Metallic Saw Blade : Blade has an Fe304surface coating flr a ... , 315mm, 325mm, 350mm, 400mm. Can choose its thickness: 1.2mm, 1.6mm, 1.8mm, 2.0mm, 2.5mm, 3.0mm. HSS Metallic Saw Blade