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Product Specification
  Type specification(inch):
12 1/4
  Type specification(mm):
311.1mm
  IADC:
437
  Additional features:
G
  Formation:
Soft Formation of Low Crushing Resistance and High Drillability
  Drilling condition:
rotary drilling、high temp.drilling、deep drilling、motor drilling
  Bearing Type:
journal bearing
  Total teeth count:
92
  Gage row teeth count:
41
  Number of gage rows:
3
  Number of inner rows:
7
  Journal angle:
33°
  Offset:
9.5
  API connection(REG pin):
6 5/8
  Weight on bit(KN):
109-320
  Rotary speed(Rpm):
300-60
  Recommened upper torqueKN.M:
37.93-43.3
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