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Bits tat-tħaffir tal-karbur tat-tungstenu b'veloċità għolja IADC537 5 7/8″ (149mm)
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Bits tal-blat Tricone IADC537 6 pulzieri (152.4 mm)
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Bit tricone li jdur IADC537 6 1/4 pulzieri (159 mm)
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TCI tricone blat bits IADC537 6 3/4″ (171mm)
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Buttuna API bit IADC537 6.5 pulzieri (165mm) bi prezz skontat
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TCI blat bit IADC537 7 1/2 ”(190 mm)
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Bit tricone tal-fabbrika API IADC537 7 5/8 ”(193.7 mm)
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TCI tricone bit IADC537 7 7/8 pulzieri (200 mm)
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Tungstenu Carbide Daħħal Bit IADC537 8 1/2″(215.9mm)
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API buttuna blat drill bit IADC537 8 3/4″ (222.2mm) bi prezz skontat
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TCI drill bit IADC537 9 1/2″ (241mm) għal oilwell tal-blat iebes
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Bits tat-tħaffir tal-bir tal-blat API IADC537 10 5/8 pulzieri (269mm)