ETU : Double Tube Drills with Outer 4 Start Thread connection and Brazed Tips, dia= 0.724 - 2.559 inch. Each item represents a diameter range. For a specific head diameter, an order form should be filled out.
  DesignationDCNDCXOALLFDCONMSHOut TubeOut DiaInt TubeInt DiaGICATGIREMgiic
  ETU-001 .724-.755 0.72400.75501.9691.8540.6300.665OT000.709IT000.4724841092 0
  ETU-002 .756-.787 0.75600.78701.9691.8500.6300.693OT000.709IT000.4724841093 0
  ETU-011 .788-.822 0.78800.82202.2052.0790.7090.724OT010.768IT010.5514841094 0
  ETU-012 .823-.858 0.82300.85802.2052.0750.7090.756OT010.768IT010.5514841095 0
  ETU-021 .859-.901 0.85900.90102.2052.0790.7680.795OT020.846IT020.5914841096 0
  ETU-022 .902-.948 0.90200.94802.2052.0710.7680.835OT020.846IT020.5914841097 0
  ETU-031 .949-.992 0.94900.99202.2642.1260.8270.886OT030.925IT030.6304841098 0
  ETU-032 .993-1.039 0.99301.03902.2642.1260.8270.925OT030.925IT030.6304841099 0
  ETU-042 1.083-1.129 1.08301.12902.3822.2360.9251.016OT041.024IT040.7094841101 0
  ETU-051 1.130-1.173 1.13001.17302.5002.3431.0041.067OT051.102IT050.7874841102 0
  ETU-052 1.174-1.220 1.17401.22002.5002.3351.0041.106OT051.102IT050.7874841103 0
  ETU-061 1.221-1.263 1.22101.26302.5002.3391.1021.157OT061.201IT060.8664841104 0
  ETU-071 1.312-1.370 1.31201.37002.7762.5981.1811.244OT071.299IT070.9454841106 0
  ETU-072 1.371-1.425 1.37101.42502.7762.5911.1811.299OT071.299IT070.9454841107 0
  ETU-081 1.426-1.468 1.42601.46802.8942.7051.2991.339OT081.398IT081.0244841108 0
  ETU-082 1.469-1.511 1.46901.51102.8942.6971.2991.370OT081.398IT081.0244841109 0
  ETU-083 1.512-1.559 1.51201.55902.8942.6891.2991.398OT081.398IT081.0244841110 0
  ETU-091 1.560-1.598 1.56001.59802.8942.6851.4171.472OT091.535IT091.1424841111 0
  ETU-092 1.599-1.645 1.59901.64502.8942.6771.4171.504OT091.535IT091.1424841112 0
  ETU-093 1.646-1.692 1.64601.69202.8942.6731.4171.535OT091.535IT091.1424841113 0
  ETU-101 1.693-1.744 1.69301.74402.9532.7361.5351.594OT101.673IT101.2604841114 0
  ETU-103 1.796-1.850 1.79601.85002.9532.7201.5351.681OT101.673IT101.2604841116 0
  ETU-111 1.851-1.909 1.85101.90903.1102.8701.6931.748OT111.831IT111.3784841117 0
  ETU-112 1.910-1.972 1.91001.97203.1102.8661.6931.799OT111.831IT111.3784841118 0
  ETU-113 1.973-2.035 1.97302.03503.1102.8541.6931.831OT111.831IT111.3784841119 0
  ETU-121 2.036-2.094 2.03602.09403.2282.9651.8501.925OT122.008IT121.5354841120 0
  ETU-131 2.213-2.299 2.21302.29903.3073.0472.0082.106OT132.185IT131.6934841123 0
  ETU-132 2.300-2.385 2.30002.38503.3073.0282.0082.173OT132.185IT131.6934841124 0
  ETU-133 2.386-2.472 2.38602.47203.3073.0312.0082.244OT132.185IT131.6934841125 0