... wear resistant,prevent rust,long service life Angle knife block :1)Hardness: HRC 61°-62°2)Thickness: ... : Japan Vacuum Heat Treatment, pressing,sintering,milling grinding, Germany grinding machine ,CNC machine and so on.7)Commodity ... Japan Vacuum Heat Treatment, pressing,sintering,milling grinding ,Germany grinding machine ,CNC machine etc.8)Advantages: Carton ... improve cutting quality. Angle knife block