DR-4D-N : DR-TWIST indexable square insert drills with coolant holes. Drilling depth 4xD.
COOLANT THROUGH TOOL 
  DesignationDD max LL1L4dD3ThGICATGIREMgiic
  DR120-048-16-04-4D-N 12.0012.4048.066.048.016.0020.00-3202079 0
  DR125-050-16-04-4D-N 12.5012.9050.068.048.016.0020.00-3202350 0
  DR130-052-16-04-4D-N 13.0013.4052.070.048.016.0020.00-3202341 0
  DR135-054-16-04-4D-N 13.5013.9054.072.048.016.0020.00-3202353 0
  DR140-056-20-05-4D-N 14.0016.8056.074.050.020.0025.00G1/4"3201325 0
  DR145-058-20-05-4D-N 14.5017.1058.076.050.020.0025.00G1/4"3201326 0
  DR150-060-20-05-4D-N 15.0017.4060.078.050.020.0025.00G1/4"3201327 0
  DR155-062-20-05-4D-N 15.5017.6062.080.050.020.0025.00G1/4"3201328 0
  DR160-064-20-05-4D-N 16.0017.8064.082.050.020.0025.00G1/4"3201329 0
  DR165-066-20-05-4D-N 16.5018.1066.084.050.020.0025.00G1/4"3201330 0
  DR170-068-20-05-4D-N 17.0018.3068.086.050.020.0025.00G1/4"3201331 0
  DR175-070-20-05-4D-N 17.5018.5070.088.050.020.0025.00G1/4"3201350 0
  DR180-072-25-06-4D-N 18.0020.3072.092.056.025.0032.00G3/8"3201351 0
  DR185-074-25-06-4D-N 18.5020.5074.094.056.025.0032.00G3/8"3201352 0
  DR190-076-25-06-4D-N 19.0020.8076.096.056.025.0032.00G3/8"3201353 0
  DR195-078-25-06-4D-N 19.5021.0078.098.056.025.0032.00G3/8"3201354 0
  DR200-080-25-06-4D-N 20.0021.3080.0100.056.025.0032.00G3/8"3201355 0
  DR205-082-25-06-4D-N 20.5021.6082.0102.056.025.0032.00G3/8"3201385 0
  DR210-084-25-07-4D-N 21.0024.5084.0104.056.025.0032.00G3/8"3201386 0
  DR215-086-25-07-4D-N 21.5024.7086.0106.056.025.0032.00G3/8"3201387 0
  DR220-088-25-07-4D-N 22.0025.0088.0108.056.025.0032.00G3/8"3201388 0
  DR225-090-25-07-4D-N 22.5025.2090.0110.056.025.0032.00G3/8"3201389 0
  DR230-092-25-07-4D-N 23.0025.5092.0112.056.025.0032.00G3/8"3201390 0
  DR235-094-25-07-4D-N 23.5025.7094.0114.056.025.0032.00G3/8"3201391 0
  DR240-096-25-07-4D-N 24.0026.0096.0116.056.025.0032.00G3/8"3201648 0
  DR025-100-32-09-4D-N 25.0029.50100.0132.058.032.0042.00G1/2"3201457 0
  DR026-104-32-09-4D-N 26.0030.00104.0136.058.032.0042.00G1/2"3201458 0
  DR027-108-32-09-4D-N 27.0030.50108.0140.058.032.0042.00G1/2"3201459 0
  DR028-112-32-09-4D-N 28.0031.00112.0144.058.032.0042.00G1/2"3201460 0
  DR029-116-32-09-4D-N 29.0031.50116.0148.058.032.0042.00G1/2"3201461 0
  DR030-120-32-09-4D-N 30.0032.00120.0152.058.032.0042.00G1/2"3201462 0
  DR031-124-32-09-4D-N 31.0032.50124.0156.058.032.0042.00G1/2"3201463 0
  DR032-128-32-09-4D-N 32.0033.00128.0160.058.032.0042.00G1/2"3201464 0
  DR033-132-32-09-4D-N 33.0034.00132.0164.058.032.0042.00G1/2"3201465 0
  DR034-136-32-09-4D-N 34.0034.50136.0168.058.032.0042.00G1/2"3201466 0
  DR035-140-32-12-4D-N 35.0040.50140.0176.058.032.0050.00G 1/2"-143201467 0
  DR036-144-32-12-4D-N 36.0041.00144.0180.058.032.0050.00G 1/2"-143201468 0
  DR037-148-32-12-4D-N 37.0041.50148.0184.058.032.0050.00G 1/2"-143201469 0
  DR038-152-32-12-4D-N 38.0042.00152.0188.058.032.0050.00G 1/2"-143201470 0
  DR039-156-32-12-4D-N 39.0042.50156.0192.058.032.0050.00G 1/2"-143201471 0
  DR040-160-40-12-4D-N 40.0043.00160.0196.068.040.0050.00G 3/4"-143201472 0
  DR041-164-40-12-4D-N 41.0043.50164.0200.068.040.0050.00G 3/4"-143201473 0
  DR042-168-40-12-4D-N 42.0044.00168.0204.068.040.0050.00G 3/4"-143201474 0
  DR043-172-40-12-4D-N 43.0044.50172.0208.068.040.0050.00G 3/4"-143201475 0
  DR044-176-40-12-4D-N 44.0045.00176.0212.068.040.0050.00G 3/4"-143201476 0
  DR045-180-40-16-4D-N 45.0051.00180.0215.068.040.0060.00G 3/4"-143201477 0
  DR046-184-40-16-4D-N 46.0051.50184.0219.068.040.0060.00G 3/4"-143201478 0
  DR047-188-40-16-4D-N 47.0052.00188.0223.068.040.0060.00G 3/4"-143201479 0
  DR048-192-40-16-4D-N 48.0052.50192.0227.068.040.0060.00G 3/4"-143201480 0
  DR049-196-40-16-4D-N 49.0053.00196.0231.068.040.0060.00G 3/4"-143201481 0
  DR050-200-40-16-4D-N 50.0054.00200.0235.068.040.0060.00G 3/4"-143201482 0
  DR051-204-40-16-4D-N 51.0054.50204.0239.068.040.0060.00G 3/4"-143201483 0
  DR052-208-40-16-4D-N 52.0055.00208.0243.068.040.0060.00G 3/4"-143201484 0
  DR053-212-40-16-4D-N 53.0055.50212.0247.068.040.0060.00G 3/4"-143201485 0
  DR054-216-40-16-4D-N 54.0056.00216.0251.068.040.0060.00G 3/4"-143201486 0
  DR055-220-40-16-4D-N 55.0056.50220.0255.068.040.0060.00G 3/4"-143201487 0
  DR056-224-40-16-4D-N 56.0057.00224.0259.068.040.0060.00G 3/4"-143201488 0
  DR057-228-40-16-4D-N 57.0057.50228.0263.068.040.0060.00G 3/4"-143201489 0
  DR058-232-40-16-4D-N 58.0058.00232.0267.068.040.0060.00G 3/4"-143201490 0
  DR059-236-40-16-4D-N 59.0059.00236.0271.068.040.0060.00G 3/4"-143201491 0
  DR060-240-40-16-4D-N 60.0060.00240.0275.068.040.0060.00G 3/4"-143201492 0

Hole tolerance D+0.35/-0.05 in average conditions. However it can be higher or lower according to machine and tooling conditions.