W+ Nanocoated Cold Saw Product FeaturesSpecifically designed for medium to high carbon steel cutting. High durability and extended tool life. Application ParametersV=90-130m/min Fz=0.05-0.1mm Cutting LifeApproximately 50m2 for 55# steel. (ASTM 1055)Approximately 30m2 for GCr15 Bearing Steel.(AISI 52100)