TurningMillingDrillingTechnicalInformationIndex Parting & grooving Chip breaker overview Grooving A MM P M K S Ground chip breaker with straight cutting edge for general machining of steel, stainless steel and heat-resistant alloys. Suitable for grooving, turning and parting. MG P M K S B Universal chip breaker for general machining of steel, stainless steel and cast iron. Suitable for grooving, turning and parting. MG P M K S C Universal chip breaker with round profile for general machining of steel, stainless steel and cast iron. Suitable for grooving and profiling. EG M P S D Ground precision chip breaker for grooving and turning applications. Suitable for machining of stainless steel. E-tolerance for high repeatability. EG M P S Ground precision chip breaker with round profile for grooving and turning applications. Suitable for machining of stainless steel. E-tolerance for high repeatability. E NM S Special chip breaker for machining of heat-resistant materials. A 344