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API wili ʻili puʻupuʻu IADC517 4.5 iniha (114mm) ma ka waihona
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Pihi pihi IADC517 118mm no ka wili pōhaku luawai.
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hale hana API o ka bit rotary roller bit IADC517 4 3/4″ (120mm)
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ʻO ke pihi ʻōwili API i hoʻopaʻa ʻia i nā ʻāpana IADC517 5 1/4″ (133mm) ma ka waihona.
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Tungsten Carbide Hoʻokomo i ka bit wili pōhaku IADC517 5 7/8″ (149mm)
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ʻO API luawai tricone bit IADC517 6″(152.4mm) no ke kūʻai aku
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ʻO nā ʻāpana drill tricone roller IADC517 6 1/4″ (159mm)
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TCI sila ʻia nā ʻāpana pihi pōhaku IADC517 6 1/2″ (165mm) no ka wili luawai
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TCI tricone bit IADC517 7 1/2″ (190mm)
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Bit Hohonu Tricone Bit IADC517 7 7/8 iniha (200mm)
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API Tricone Bit IADC517 8.5 iniha (215.90mm)
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API Tricone wili bit IADC517 8 3/4 iniha (222mm) ma ka waihona