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Mining well rotary tricone drilling bits IADC835 11″(179.4mm)
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API gold mining Rock Bits IADC845 for hard formation
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API Deep mining well tricone bits IADC832 12.25″ 311mm
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API Mining rock drilling bits IADC745 12.25″(311mm) factory
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API Metal mining rock drill bits IADC532 for very hard formation
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API gold ore well tricone drill bits IADC622 9″ for hard rock