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Biby fandavahana tungstène carbide avo lenta IADC537 5 7/8″ (149mm)
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Tricone rock bits IADC537 6 santimetatra (152.4 mm)
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Rotary tricone bit IADC537 6 1/4 in (159 mm)
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TCI tricone rock bits IADC537 6 3/4″ (171mm)
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API bokotra bit IADC537 6.5 santimetatra (165mm) miaraka amin'ny vidiny midina
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TCI rock bit IADC537 7 1/2 ” (190 mm)
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API tricone bit IADC537 7 5/8 ” (193.7 mm)
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TCI tricone bit IADC537 7 7/8 in (200 mm)
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Tungstène Carbide Insert Bit IADC537 8 1/2″(215.9mm)
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API bokotra rock drill bit IADC537 8 3/4″(222.2mm) miaraka amin'ny vidiny midina
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TCI drill bit IADC537 9 1/2″(241mm) ho an'ny oilwell rock mafy
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Biby fandavahana vatolampy API IADC537 10 5/8 in (269mm)