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IADC: 237
Pin Connection: 6 5/8''API
IADC: 427
Pin Connection: 7 5/8'' API
IADC Code: 137
Circulation Type: Jet Air
IADC: 635
Bit Diameter: 229mm(9'')
Bit Diameter: 200mm(7 7/8'')
IADC: 645
IADC Code: 837
IADC: 837
Bit Diameter: 280mm(11'')
IADC Code: 645
Bearing Type: Roller-Ball-Roller- Thrust Button/Sealed Bearing
IADC Code: 725
Bit Diameter: 250mm(9 7/8'')
IADC Code: 635
Pin Connection: 3 1/2''API
IADC Code: 535
IADC Code: 642
Pin Connection: 4 1/2''API
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