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Ho tjheka ha API tricone IADC216 7 5/8 inches (194mm) bakeng sa rig ea oli
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Likhoune tse tharo tsa fektheri IADC217 3 7/8 inches (98mm)
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Likotoana tsa ho tjheka tse potolohang IADC217 6 inches (152mm)
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API silled tooth cones three bits IADC217 7.5 inches (190mm) e teng setokong
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Likotoana tsa meno tsa tšepe ea oli ea API IADC217 8.5 inches (215mm) bakeng sa ho cheka mafika
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Likotoana tsa ho tjheka selibeng se tebileng IADC217 11 5/8 inches (295.3mm) bakeng sa lefika le thata
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Li-bits tsa meno tsa API Mill IADC217 12 1/4 inches (311mm) bakeng sa ho tjheka seliba
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Likotoana tsa ho tjheka tse theko e tlase IADC217 14 3/4 inches (374mm) bakeng sa lefika le thata