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12-1/4'' IADC642 Tricone Bit for coal mining

  • Diameter: 311mm
  • Diameter:12 1/4"
  • IADC No.: 642
  • Pin Type Dimensions: 6 5/8" API
  • Bearing type : Air Cooled Bearing
  • Circulation Type : Jet Air
  • Usag : Mining
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Technical Support: Magic Lamp