South American Trione Drill Bit
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Factory 8 1/2inch IADC 537 Tricone Drill Bit Rock Drill Bit Tungsten Carbide Insert Drill Bit
Type: 8 1/2inch IADC 537 Tricone drill bit
Dual metal face sealed journal bearings sustain 7-15 t/bit WOB at 60-110 rpm.
Thread: 6-5/8" API Regular Pin.
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