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DCN A-8D : SUMOCHAM 8xD drills with indexable heads, one flat shank and internal coolant holes. Feature 4 standard drilling head types for drilling on 4 different material groups.
COOLANT THROUGH TOOL 
  DesignationD min D maxLdD3L1L4Po. SizeOALLUPLGICATGIREMgiic
  DCN 060-048-12A-8D 6.006.4048.012.0016.0062.045.06.0107.0049.11.093203269 0
  DCN 065-052-12A-8D 6.506.9052.012.0016.0066.345.06.5111.3053.21.183203276 0
  DCN 070-056-12A-8D 7.007.4056.012.0016.0070.645.07.0115.6057.31.273260160 0
  DCN 075-060-12A-8D 7.507.9060.012.0016.0074.645.07.0120.0061.41.363203282 0
  DCN 080-064-12A-8D 8.008.4064.012.0016.0079.445.08.0124.4065.51.463202465 0
  DCN 085-068-12A-8D 8.508.9068.012.0016.0083.445.08.0128.4069.61.553202886 0
  DCN 090-072-12A-8D 9.009.4072.012.0016.0087.845.09.0132.8073.61.643202466 0
  DCN 095-076-12A-8D 9.509.9076.012.0016.0091.845.09.0136.8077.71.733203195 0
  DCN 100-080-16A-8D 10.0010.4080.016.0020.0096.248.010.0144.2081.81.823202467 0
  DCN 105-084-16A-8D 10.5010.9084.016.0020.00100.248.010.0148.2085.91.913202887 0
  DCN 110-088-16A-8D 11.0011.4088.016.0020.00104.648.011.0152.6090.02.003202468 0
  DCN 115-092-16A-8D 11.5011.9092.016.0020.00108.648.011.0156.6094.12.093203196 0
  DCN 120-096-16A-8D 12.0012.4096.016.0020.00113.048.012.0161.0098.22.183202437 0
  DCN 125-100-16A-8D 12.5012.90100.016.0020.00117.048.012.0165.00102.32.273203197 0
  DCN 130-104-16A-8D 13.0013.40104.016.0020.00121.648.013.0169.60106.42.373202469 0
  DCN 135-108-16A-8D 13.5013.90108.016.0020.00125.648.013.0173.60110.52.463203198 0
  DCN 140-112-16A-8D 14.0014.40112.016.0020.00132.148.014.0180.10114.62.553202470 0
  DCN 145-116-16A-8D 14.5014.90116.016.0020.00136.248.014.0184.20118.62.643203199 0
  DCN 150-120-20A-8D 15.0015.90120.020.0025.00143.750.015.0193.70122.72.733202471 0
  DCN 160-128-20A-8D 16.0016.90128.020.0025.00153.350.016.0203.30130.92.913202472 0
  DCN 170-136-20A-8D 17.0017.90136.020.0025.00162.950.017.0212.90139.13.093202473 0
  DCN 180-144-25A-8D 18.0018.90144.025.0032.00172.556.018.0228.50147.33.283202474 0
  DCN 190-152-25A-8D 19.0019.90152.025.0032.00182.056.019.0238.00155.53.463202475 0
  DCN 200-160-25A-8D 20.0020.90160.025.0032.00191.656.020.0247.60163.63.643202601 0
  DCN 210-168-25A-8D 21.0021.90168.025.0032.00201.256.021.0257.20171.83.823202599 0
  DCN 220-176-25A-8D 22.0022.90176.025.0032.00210.856.022.0266.80180.04.003202597 0
  DCN 230-184-32A-8D 23.0023.90184.032.0042.00220.460.023.0280.40188.24.193202595 0
  DCN 240-192-32A-8D 24.0024.90192.032.0042.00230.060.024.0290.00196.44.373202593 0
  DCN 250-200-32A-8D 25.0025.90200.032.0042.00239.560.025.0299.50204.64.553202592 0
  DCN 260-208-32A-8D 26.0026.90208.032.0042.00249.360.026.0309.30212.74.733203112 0
  DCN 270-216-32A-8D 27.0027.90216.032.0042.00258.660.027.0318.60220.94.913203123 0
  DCN 280-224-32A-8D 28.0028.90224.032.0042.00268.260.028.0328.20229.15.103203136 0
  DCN 290-232-32A-8D 29.0029.90232.032.0042.00277.860.029.0337.80237.35.283203225 0
  DCN 300-240-32A-8D 30.0030.90240.032.0042.00287.460.030.0347.40245.55.463203149 0
  DCN 310-248-32A-8D 31.0031.90248.032.0042.00297.060.031.0357.00253.65.643203161 0
  DCN 320-256-32A-8D 32.0032.90256.032.0042.00306.560.032.0366.50261.85.823203173 0

Prior to using the 8xD drill, it is recommended to drill a pre-hole by using a DCN 1.5xD drill or a centering drill. It is not required if HCP drilling head is used.