... 4.Use:Cutting metal material Like product:Blade Linear guideway,shear blade,circular knives and spacers,cold and ... hot cutting linear blade,Square profiled cutting blade,Wear plates,Sheet metal coils cutting, ... wear resistance. 4.Incision:Smooth free of burr5.Blade Incision:Smooth without burr and long working life6. ... technical index reaches the international standard blade knife tool