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API o lo'o tu'uina atu mea e viliina ai ma'a loloto IADC537 9 5/8″(244.5mm)
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API TCI button bit IADC537 9 7/8″(250mm) mo le vili vaieli maa malo
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Pika Fa'amau Rotary IADC537 3 7/8″ (98mm)
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Tricone Bits IADC537 4 5/8″ (118mm)
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Tricone drill bits IADC537 4 3/4″ (120.6mm)
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API tricone rock bit IADC537 5 1/4″ (133mm)
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API vili papa maa IADC537 5 1/2 ” (139.7 mm) mo vaieli malo
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API vili vili IADC537 5 5/8″ (142.9mm)
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Tungsten carbide drill bits IADC537 5 7/8″ (149mm)
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Tricone papa maa IADC537 6 inisi (152.4 mm)
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Rotary tricone bit IADC537 6 1/4 inisi (159 mm)
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TCI tricone rock bits IADC537 6 3/4″ (171mm)