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Nā ʻāpana wili i loko o ka waihona IADC127 7 7/8 ʻīniha (200mm)
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Nā ʻāpana tricone hoʻēmi IADC127 9 5/8” (244.5mm)
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Ke poʻo wili no ka rig IADC127 9 7/8 ” (250.8mm)
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3 mau ʻāpana wili cones IADC127 11 5/8 ” (295mm)
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Nā ʻāpana wili hohonu IADC127 12 1/4” (311mm)
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Nā ʻāpana wili lua i hana kūikawā ʻia IADC127 14 3/4 ”(374mm)
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Nā ʻāpana tricone kūʻai nui IADC127 17.5 ʻīniha (444.5mm)