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Colombia 9 7/8 tricone bit for mining,iadc825
Colombia 26inch steel tooth bit iadc115
Colombia 12.25 IADC317 steel tooth tricone bit
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Colombia 17 1/2 inch IADC837 TCI tricone bit
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Colombia 15 inch IADC617 TCI tricone bit
Colombia 15 inch IADC537 TCI tricone bit
Colombia 14 3/4 inch IADC617 TCI tricone bit
