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ʻEkolu cones bit factory IADC217 3 7/8 iniha (98mm)
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Tricone bits IADC217 4.5 iniha (114mm) no ka wili luawai pohaku hohonu
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API i sila ʻia i ka ʻāpana ʻōniʻoniʻo no ka wili ʻana iā IADC217 5 7/8 iniha (149.2mm)
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ʻO nā ʻāpana wili wiliwili IADC217 6 ʻīniha (152mm)
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API wili ʻia i ʻekolu mau ʻāpana cones IADC217 7.5 iniha (190mm) ma ka waihona
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API aila kila niho bit IADC217 8.5 iniha (215mm) no ka wili pōhaku
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Mea hoʻolako i nā bits API IADC217 8 3/4 iniha (222.2mm)
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Nā ʻāpana wili luawai hohonu IADC217 11 5/8 iniha (295.3mm) no ka pōhaku paʻa
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Nā ʻāpana niho API Mill IADC217 12 1/4 iniha (311mm) no ka wili luawai
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Nā ʻāpana wili kumu kūʻai haʻahaʻa IADC217 14 3/4 iniha (374mm) no ka pōhaku paʻa.
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nā ʻāpana wiliwili kūʻai nui IADC217 17.5 iniha (444.5mm)