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Kubowola mitengo yotsika IADC217 14 3/4 mainchesi (374mm) pamiyala yolimba
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yogulitsa pobowola zidutswa IADC217 17.5 mainchesi (444.5mm)
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Tricone kubowola bits IADC114 15.5 mainchesi( 394mm) mu katundu
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Zitsulo dzino trione pang'ono fakitale IADC114 17.5 mainchesi(444.5mm)
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Simenti pulagi kubowola bits IADC127 4 3/4 mainchesi (120mm)
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API makonda kubowola bits IADC126 5 1/4 mainchesi (133mm) kwa hard rock
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Mphera mano pobowola bwino IADC215 mainchesi 17.5 (444.5mm)
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Mtengo wa API trione kubowola IADC216 4 5/8 mainchesi (118mm)
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Kuzama kwa tricone kozama IADC216 6 mainchesi (152mm)
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API pobowola zida zopangira katundu IADC216 5 3/4 mainchesi (146mm)
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API triocne kubowola IADC125 17 1/2 mainchesi (444.5mm)
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API bwino kubowola mutu IADC126 7 1/2 mainchesi (190.5mm)