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API tatlong cone bit IADC537 11 5/8″(295mm) para sa matigas na balon
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Umiikot na tri-cone bit IADC537 12 1/4″(311mm)
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Metal sealed Far Eastern rock drilling bit IADC537 13 5/8″(346mm)
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API tricone drill bit IADC537 14 3/4″ (374mm) para sa hard rock
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Tricone roller bit drilling IADC537 15.5″(393.7mm) para sa malalim na balon
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TCI drilling bit IADC537 16″(406.4mm)
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Tungsten Carbide Insert tricone bit IADC537 17.5″ (444.5mm)
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API at ISO tricone roller bit IADC537 26″(660.4mm)