DCT (M8-M24) : CHAMDRILL indexable head drills with chamfering inserts mainly for pre-thread holes.
COOLANT THROUGH TOOL 
  DesignationD min Dnominal D maxD2dLL5L1L4Po. SizeTh GICATGIREMgiic
  DCT 068-021-14B-M8   6.806.807.4013.9014.0020.924.5041.945.06.8M83201003 Reduce recommended feed for DCT 6.8 mm drills by 10% 0
  DCT 085-026-14B-M10 8.308.508.9014.0014.0026.329.0046.545.08.0M103201004 0
  DCT 102-030-14B-M12 10.0010.2010.9014.0014.0030.031.9052.045.010.0M123201005 0
  DCT 120-035-16B-M14 12.0012.0012.9016.0016.0034.936.9058.048.012.0M143201006 0
  DCT 140-039-18B-M16 14.0014.0014.9018.0018.0039.041.0060.048.014.0M163201007 0
  DCT 175-042-20B-M20 17.3017.5017.9021.0020.0042.043.8063.050.017.0M203201008 0
  DCT 210-048-25B-M24 21.0021.0021.9025.5025.0048.250.5069.056.021.0M243201009 0

Hole tolerance: D+0.05 in average conditions. However, it can be higher or lower according to machine and tooling conditions.