TurningMillingDrillingTechnicalInformationIndex Chip breaker overview Indexable drills Drilling A PM P M K For machining of steel, stainless steel and cast iron. EM P M S B For machining of steel, stainless steel and heat-resistant alloys. PG P K C For machining of steel and cast iron. D P M K For machining of steel, stainless steel and cast iron. D 53 P M K N For machining of steel, stainless steel, cast iron and non-ferrous metals. E C3