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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
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Tricone roller bit gucukura IADC537 15.5 ″ (393.7mm) kugirango iriba ryimbitse
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TCI gucukura biti IADC537 16 ″ (406.4mm)
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Tungsten Carbide Shyiramo tricone bit IADC537 17.5 ″ (444.5mm)
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API & ISO tricone roller bit IADC537 26 ″ (660.4mm)