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API buto bit IADC537 6.5 santimetero (165mm) hamwe nigiciro cyagabanijwe
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TCI urutare biti IADC537 7 1/2 ”(190 mm)
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Uruganda rwa API tricone bit IADC537 7 5/8 ”(193.7 mm)
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TCI tricone bit IADC537 7 7/8 santimetero (200 mm)
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Tungsten Carbide Shyiramo Bit IADC537 8 1/2 ″ (215.9mm)
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API buto ya rock drill bit IADC537 8 3/4 ″ (222.2mm) hamwe nigiciro cyagabanijwe
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TCI drill bit IADC537 9 1/2 ″ (241mm) kumavuta ya peteroli
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API urutare neza gucukura bits IADC537 10 5/8 santimetero (269mm)
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API cones eshatu bit IADC537 11 5/8 ″ (295mm) kugirango bikomere neza
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Kuzenguruka tri-cone bit IADC537 12 1/4 ″ (311mm)
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Icyuma gifunze Iburasirazuba bwa kure gucukura biti IADC537 13 5/8 ″ (346mm)
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API tricone drill bit IADC537 14 3/4 ″ (374mm) kubutare bukomeye