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Gwo vitès tengstèn carbure perçage Bits IADC537 5 7/8″ (149mm)
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Bits wòch trikon IADC537 6 pous (152.4 mm)
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Rotary tricone bit IADC537 6 1/4 pous (159 mm)
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Bits wòch TCI tricone IADC537 6 3/4″ (171mm)
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API bouton ti jan IADC537 6.5 pous (165mm) ak pri rabè
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TCI wòch bit IADC537 7 1/2 "(190 mm)
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API faktori tricone ti jan IADC537 7 5/8 "(193.7 mm)
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TCI tricone ti jan IADC537 7 7/8 pous (200 mm)
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Tungstène Carbide Insert Bit IADC537 8 1/2″(215.9mm)
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API bouton wòch fè egzèsis ti jan IADC537 8 3/4″ (222.2mm) ak pri rabè
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TCI drill bit IADC537 9 1/2″(241mm) pou twou wòch difisil
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API wòch byen perçage Bits IADC537 10 5/8 pous (269mm)