9 7/8 Tricone bit
Customized
API
Stub-length
Center Drill Bit
Tungsten Carbide
Well Drilling
6 1/2" 8 1/2" 9 7/8" 12 1/4" 20"
Provided
Customized
IADC 537 IADC 637 IADC 737
API Reg ; Beco
Richdrill
Standard Export Package
Blast Drilling & Well Drilling
China
8207199
