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Mofani oa li-bits tsa li-roller cones IADC216 5 5/8 inches (143mm)
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Li-roller bits tse koetsoeng IADC216 5 7/8inches (149mm)
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Likotoana tsa Tricone tse teng setokong IADC216 6 3/4 inches (171mm)
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Karolo ea dill e potolohang IADC216 7 7/8 inches (200mm)
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Mofani oa li-rotary bits IADC216 10 5/8 inches (269mm)
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Reka di-drilling bits IADC216 17.5″ (444.5mm)
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Likotoana tsa Tricone IADC217 4.5 inches (114mm) bakeng sa ho cheka liliba tse tebileng tsa mafika
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Karolo ea khoune ea roller e koetsoeng ea API bakeng sa ho tjheka IADC217 5 7/8 inches (149.2mm)
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Mofani oa li-bits tsa API IADC217 8 3/4 inches (222.2mm)
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likotoana tsa ho tjheka tse ngata IADC217 17.5 inches (444.5mm)
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Feme ea tšepe ea tricone bit IADC114 17.5 inches(444.5mm)
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Likotoana tsa ho phunya samente IADC127 4 3/4 inches (120mm)