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3 Inch R38 Retractable Drill Bit Wear Resistance Threaded Drill Bit

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3 Inch R38 Retractable Drill Bit Wear Resistance Threaded Drill Bit

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3 Inch R38 Retractable Drill Bit Wear Resistance Threaded Drill Bit

Description This type of bit is well known for its wear resistance on soft to medium-hard rock formations (between 55 Mpa to 165 Mpa compressive strength). Featuring spherical tungsten carbide inserts ...

Product Tags:

stone drilling bits

spherical drill bit

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