Set di punte per trapano a torsione metriche M42 8% cobalto per acciaio inox e metallo duro (1M
Premium M42 8% Cobalt Steel ,68-70 HRC (Rockwell Hardness Scale) ,Usually Give the Best Heat,Wear and Chip Resistance and Long Tool Life. M42 Cobalt 8% Alloy. Included Components drill bits. Why choose STROTON cobalt drill bits?.