... -2) is the most common high speed tool steel, especially SKH9 (SKH51). It replaces the W high speed tool steel SKH2 to be NO.1 of ... -1230A.O.H540-5902-364-56Use:: drill, tap, reamer, circular saw, gear cutter, broach, planer etc.Die: all kinds of hot ... )Six grinding surfaces, HRC62-64Flat steel(10-90mm)×(100-600mm)BlackRound barDiameter 2-200mmBlack or grinding High Speed Steel round bar/rod ,M2/M35 ...