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Onye na-eweta API nke obere olulu mmiri miri emi IADC537 9 5/8″(244.5mm)
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API TCI bọtịnụ bit IADC537 9 7/8″(250mm) maka igwu olulu mmiri siri ike
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Nnukwu nkume Tricone IADC417 8 1/2″(215.9mm)
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Ụlọ ọrụ API nke TCI tricone bit IADC617 5 5/8″ (142.9mm)
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TCI tricone bit IADC417 17.5″(444.5mm)
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Ngwa API nke na-egwu olulu mmiri IADC417 12 1/4″(311mm) maka nkume siri ike
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Ụlọ ọrụ API nke obere ihe eji egwu mmiri nkume IADC437 8.5 ″ maka igwu ala
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Bit tricone API IADC437 6″(152mm) maka igwu olulu mmiri
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TCI tricone bit IADC447 8 1/2 inch (215.9mm)
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Ihe eji egwu mmiri Rotary IADC447 6.5 inch (165mm)
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Obere nkume cone atọ IADC517 10 5/8″ (269mm)
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Rotary tricone Bits IADC517 9 7/8″ (250mm) maka nkume siri ike