DR-2D-N : DR-TWIST indexable square insert drills with coolant holes. Drilling depth 2xD.
COOLANT THROUGH TOOL 
  DesignationDD max LL1L4dD3ThGICATGIREMgiic
  DR120-024-16-04-2D-N 12.0012.4024.042.048.016.0020.00-3202078 0
  DR125-025-16-04-2D-N 12.5012.9025.043.048.016.0020.00-3202348 0
  DR130-026-16-04-2D-N 13.0013.4026.044.048.016.0020.00-3202339 0
  DR135-027-16-04-2D-N 13.5013.9027.045.048.016.0020.00-3202351 0
  DR140-028-20-05-2D-N 14.0016.8028.046.050.020.0025.00G1/4"3201301 0
  DR145-029-20-05-2D-N 14.5017.1029.047.050.020.0025.00G1/4"3201302 0
  DR150-030-20-05-2D-N 15.0017.4030.048.050.020.0025.00G1/4"3201303 0
  DR155-031-20-05-2D-N 15.5017.6031.049.050.020.0025.00G1/4"3201304 0
  DR160-032-20-05-2D-N 16.0017.8032.050.050.020.0025.00G1/4"3201305 0
  DR165-033-20-05-2D-N 16.5018.1033.051.050.020.0025.00G1/4"3201306 0
  DR170-034-20-05-2D-N 17.0018.3034.052.050.020.0025.00G1/4"3201307 0
  DR175-035-20-05-2D-N 17.5018.5035.053.050.020.0025.00G1/4"3201338 0
  DR180-036-25-06-2D-N 18.0020.3036.056.056.025.0032.00G3/8"3201339 0
  DR185-037-25-06-2D-N 18.5020.5037.057.056.025.0032.00G3/8"3201340 0
  DR190-038-25-06-2D-N 19.0020.8038.058.056.025.0032.00G3/8"3201341 0
  DR195-039-25-06-2D-N 19.5021.0039.059.056.025.0032.00G3/8"3201342 0
  DR200-040-25-06-2D-N 20.0021.3040.060.056.025.0032.00G3/8"3201343 0
  DR205-041-25-06-2D-N 20.5021.6041.061.056.025.0032.00G3/8"3201371 0
  DR210-042-25-07-2D-N 21.0024.5042.062.056.025.0032.00G3/8"3201372 0
  DR215-043-25-07-2D-N 21.5024.7043.063.056.025.0032.00G3/8"3201373 0
  DR220-044-25-07-2D-N 22.0025.0044.064.056.025.0032.00G3/8"3201374 0
  DR225-045-25-07-2D-N 22.5025.2045.065.056.025.0032.00G3/8"3201375 0
  DR230-046-25-07-2D-N 23.0025.5046.066.056.025.0032.00G3/8"3201376 0
  DR235-047-25-07-2D-N 23.5025.7047.067.056.025.0032.00G3/8"3201377 0
  DR240-048-25-07-2D-N 24.0026.0048.068.056.025.0032.00G3/8"3201646 0
  DR025-050-32-09-2D-N 25.0029.5050.082.058.032.0042.00G1/2"3201757 0
  DR026-052-32-09-2D-N 26.0030.0052.084.058.032.0042.00G1/2"3201758 0
  DR027-054-32-09-2D-N 27.0030.5054.086.058.032.0042.00G1/2"3201759 0
  DR028-056-32-09-2D-N 28.0031.0056.088.058.032.0042.00G1/2"3201760 0
  DR029-058-32-09-2D-N 29.0031.5058.090.058.032.0042.00G1/2"3201761 0
  DR030-060-32-09-2D-N 30.0032.0060.092.058.032.0042.00G1/2"3201762 0
  DR031-062-32-09-2D-N 31.0032.5062.094.058.032.0042.00G1/2"3201763 0
  DR032-064-32-09-2D-N 32.0033.0064.096.058.032.0042.00G1/2"3201764 0
  DR033-066-32-09-2D-N 33.0034.0066.098.058.032.0042.00G1/2"3201765 0
  DR034-068-32-09-2D-N 34.0034.5068.0100.058.032.0042.00G1/2"3201766 0
  DR035-070-32-12-2D-N 35.0040.5070.0106.058.032.0050.00G1/2-13201767 0
  DR036-072-32-12-2D-N 36.0041.0072.0108.058.032.0050.00G1/2-13201768 0
  DR037-074-32-12-2D-N 37.0041.5074.0110.058.032.0050.00G1/2-13201769 0
  DR038-076-32-12-2D-N 38.0042.0076.0112.058.032.0050.00G1/2-13201770 0
  DR039-078-32-12-2D-N 39.0042.5078.0114.058.032.0050.00G1/2-13201771 0
  DR040-080-40-12-2D-N 40.0043.0080.0116.068.040.0050.00G3/4-143201772 0
  DR041-082-40-12-2D-N 41.0043.5082.0118.068.040.0050.00G3/4-143201773 0
  DR042-084-40-12-2D-N 42.0044.0084.0120.068.040.0050.00G3/4-143201774 0
  DR043-086-40-12-2D-N 43.0044.5086.0122.068.040.0050.00G3/4-143201775 0
  DR044-088-40-12-2D-N 44.0045.0088.0124.068.040.0050.00G3/4-143201776 0
  DR045-090-40-16-2D-N 45.0051.0090.0126.068.040.0060.00G3/4-143201777 0
  DR046-092-40-16-2D-N 46.0051.5092.0128.068.040.0060.00G3/4-143201778 0
  DR047-094-40-16-2D-N 47.0052.0094.0130.068.040.0060.00G3/4-143201779 0
  DR048-096-40-16-2D-N 48.0052.5096.0132.068.040.0060.00G3/4-143201780 0
  DR049-098-40-16-2D-N 49.0053.0098.0134.068.040.0060.00G3/4-143201781 0
  DR050-100-40-16-2D-N 50.0054.00100.0136.068.040.0060.00G3/4-143201782 0
  DR051-102-40-16-2D-N 51.0054.50102.0138.068.040.0060.00G3/4-143201783 0
  DR052-104-40-16-2D-N 52.0055.00104.0140.068.040.0060.00G3/4-143201784 0
  DR053-106-40-16-2D-N 53.0055.50106.0142.068.040.0060.00G3/4-143201785 0
  DR054-108-40-16-2D-N 54.0056.00108.0144.068.040.0060.00G3/4-143201786 0
  DR055-110-40-16-2D-N 55.0056.50110.0146.068.040.0060.00G3/4-143201787 0
  DR056-112-40-16-2D-N 56.0057.00112.0148.068.040.0060.00G3/4-143201788 0
  DR057-114-40-16-2D-N 57.0057.50114.0150.068.040.0060.00G3/4-143201789 0
  DR058-116-40-16-2D-N 58.0058.00116.0152.068.040.0060.00G3/4-143201790 0
  DR059-118-40-16-2D-N 59.0059.00118.0154.068.040.0060.00G3/4-143201791 0
  DR060-120-40-16-2D-N 60.0060.00120.0156.068.040.0060.00G3/4-143201792 0

Hole tolerance D+0.15/-0.05 in average conditions. However it can be higher or lower according to machine and tooling conditions.