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API ʻekolu cones bit IADC537 11 5/8″(295mm) no ka pūnāwai paʻakikī
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Ke hoʻololi nei i ka bit tri-cone IADC537 12 1/4″(311mm)
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Metala i sila ʻia ma ka Hikina Hikina ʻelua wili pōhaku IADC537 13 5/8″(346mm)
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API tricone drill bit IADC537 14 3/4″ (374mm) no ka pōhaku paa
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ʻO ka wili ʻana i ka ʻuala Tricone IADC537 15.5 ″ (393.7mm) no ka luawai hohonu.
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TCI drill bit IADC537 16″(406.4mm)
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Hoʻokomo ʻo Tungsten Carbide i kahi tricone bit IADC537 17.5″ (444.5mm)
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API & ISO tricone roller bit IADC537 26″(660.4mm)