6 3/4 inch steel tooth tri

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7 1/2 inch steel tooth bit

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8 inch steel tooth tricone

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9 7/8 inch steel tooth tri

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5 7/8 inch IADC 417 tci t

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API 8 1/2 inch HAT127 king

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9 7/8 inch steel tooth tr

9 7/8 inch steel tooth tricone drill bit,series bit adopts ...

3 1/2 inch center nozzle s

3 1/2 inch center nozzle steel teeth tricone bit...

165mm IADC 217 water wells

sale steel tooth tricone drill rock bit size 165mm IADC 217 ...

311.2mm IADC 327 water ste

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17 1/2 inch IADC 115 Steel

17 1/2" IADC 115 Steel Tooth tricone bit...

12 1/4 inch IADC 127 Steel

12 1/4" IADC 127 Steel Tooth tricone bit...