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Nā ʻāpana pōhaku tricone TCI IADC537 6 3/4″ (171mm)
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ʻĀpana pihi API IADC537 6.5 ʻīniha (165mm) me ke kumu kūʻai hoʻēmi
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ʻO ka ʻāpana pōhaku TCI IADC537 7 1/2” (190 mm)
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ʻO ka ʻāpana tricone hale hana API IADC537 7 5/8 ” (193.7 mm)
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ʻO ka ʻāpana tricone TCI IADC537 7 7/8 ʻīniha (200 mm)
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ʻO ka Tungsten Carbide Insert Bit IADC537 8 1/2″(215.9mm)
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ʻO ka ʻūlū pōhaku pihi API IADC537 8 3/4″(222.2mm) me ke kumu kūʻai hoʻēmi
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ʻO ka ʻūlili wili TCI IADC537 9 1/2″(241mm) no ka lua ʻaila pōhaku paʻakikī
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Nā ʻāpana ʻeli lua pōhaku API IADC537 10 5/8 ʻīniha (269mm)
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ʻO ka API ʻekolu cones bit IADC537 11 5/8″(295mm) no ka luawai paʻakikī
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ʻO ka ʻāpana tri-cone e hoʻohuli ana IADC537 12 1/4″(311mm)
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ʻŌmole wili pōhaku hikina mamao i hoʻopaʻa ʻia me ka metala IADC537 13 5/8″(346mm)