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Piko API bit IADC537 6.5 iniha (165mm) me ka uku hoemi
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ʻĀpana pōhaku TCI IADC537 7 1/2 ” (190 mm)
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API no ka hale hana tricone bit IADC537 7 5/8 ” (193.7 mm)
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TCI tricone bit IADC537 7 7/8 iniha (200 mm)
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Bit hoʻokomo ʻia ʻo Tungsten Carbide IADC537 8 1/2″(215.9mm)
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Piko API pōhaku drill bit IADC537 8 3/4″(222.2mm) me ke kumu kūʻai hoemi
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TCI drill bit IADC537 9 1/2″(241mm) no ka ʻaila ʻaila pōhaku paʻa
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API wili luawai pōhaku IADC537 10 5/8 iniha (269mm)
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API ʻekolu cones bit IADC537 11 5/8″(295mm) no ka pūnāwai paʻakikī
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Ke hoʻololi nei i ka bit tri-cone IADC537 12 1/4″(311mm)
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Metala i sila ʻia ma ka Hikina Hikina ʻelua wili pōhaku IADC537 13 5/8″(346mm)
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API tricone drill bit IADC537 14 3/4″ (374mm) no ka pōhaku paa