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API Mill parani niho IADC217 12 1/4 inihi (311mm) mo te poka keri
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Paraire keri utu iti IADC217 14 3/4 inihi (374mm) mo te toka maro.
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moka keri rarawe IADC217 17.5 inihi (444.5mm)
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4 1/4 Inihi PDC Toia Moka 3 Matatahi
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wheketere API o TCI tricone bit IADC617 5 5/8″ (142.9mm)
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API rotary tricone bit IADC617 6 ” (152mm) mo te keri poka
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Tricone toka bit IADC617 8 1/2″ (215.9mm) mo te keri poka
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Kaihanga API mo te moka toka tricone IADC617 9 7/8 inihi” (250mm)
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wheketere API o te tricone roller bit IADC617 12 1/4 inihi (311.1mm)
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wheketere API o nga paraka keri toka IADC617 17 1/2 inihi (444.5mm) kei roto i nga taonga
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API tungsten carbide kōkuhu toka kumine bit IADC627 3 7/8″ (98mm) kei roto i nga taonga
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Moka roera hurihuri IADC627 8 1/2″ (215mm/216mm)