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pdc core bit 153mm

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PDC drill bit for hard rock, basalt, crystal rock

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Unique blue diamond-Color DIAMOND

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PDC cutter of Huanghe Whirlwind

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PDC drill bit & Tricone bit-Huanghe Whirlwind (HHWW) drilling tools

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Big 300mm PDC drill bits - Water Well & Rock Drilling Tools

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Water Well Drilling Tools