New ADF & AHF Chip breaker Optimised geometry series especially for machining of steel and stainless steel. -ADF Negative inserts e.g. CNMG ... Ground, double sided chip breaker with good chip control. Wide range of application due to excellent balance of sharpness and cutting edge stability. -AHF Positive inserts e.g. CCMT ... Ground, single sided chip breaker with good chip control. Wide range of application due to excellent balance of sharpness and cutting edge stability. Range of chip breaker ADF AHF Feed rate [mm] Finishing to medium machining A 12 Depth of cut [mm]