TDR-DT 4XD : Indexable drills with modular type & square inserts & enlarged chip gullets from twist coolant holdes in drilling depth of 4xD
DR COOLANT-TOP/TDR/TND/HFD                         
  DesignationDdD3L1L2GICATGIREMgiic
  TDR 4160-20DT-06 16.0020.00032.064.084.06181032 0
  TDR 4170-20DT-06 17.0020.00032.068.088.03202067 0
  TDR 4180-20DT-06 18.0020.00032.072.093.06181033 0
  TDR 4190-20DT-06 19.0020.00032.076.097.06181034 0
  TDR 4200-20DT-06 20.0020.00032.080.0103.03201930 0