Turbo Steel is a high quality fully CNC ground cutter. Unlike other brand M2 Cutters, Turbo Steel is manufactured from M2AL material, resulting in increased cutting edge hardness of 66.6-67.5 ROC, with the ability to drill material up to 900N/mm2. Turbo Steel Advantages: Increased tool life - more holes per cutter, Reduced tool wear - produces a quality burr free hole, Unique Cutting Edge Profile - Increased stability of cut, In tests our Turbo annual broaching cutters proved to be the most cost effective available to the market today.