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Matapihi poro porotaka IADC637 4 5/8″ (118mm)
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Tricone roller bit IADC637 4 3/4″ (120mm) mō te keri toka mārō
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Paoro niho tricone bit IADC637 5.5″ (140mm)
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wheketere API o TCI tricone biit IADC637 6 "(152.4mm) kei roto i nga taonga
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API TCI tricone rock bit IADC637 6 3/4″ (171.4mm)
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Utu moka API Tricone IADC637 8 1/2 ” (215.9mm)
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Matapihi poroporo porohita IADC617 12 1/4 inihi (311mm)
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API tricone drill bit kaihanga IADC637 12 1/4” (311.1mm)
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Matapihi hiri hiri whakarewa IADC637 14 3/4” (374.6mm) mo te puna hohonu
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E toru nga poro moka IADC637 17 1/2 ” (444.5mm)
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Kaiwhakarato paraka Tricone IADC637 6.5 inihi (165mm) mo te toka maro
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Paraka roera hurihuri IADC637 9 7/8 ” (250.8mm)