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Rock Crushing Drill Bit For Hand Drill

The invention discloses a hard rock crushing drill bit which comprises a firstlevel abrasive jet guiding flexible crushing tooth I a secondlevel twowing guiding crushing tooth II and a thirdlevel threewing leading crushing tooth III wherein in the firstlevel abrasive jet guiding flexible crushing tooth I an abrasive nozzle 6 is arranged along the axial line direction of the second.

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Rock Crushing Drill Bit For Hand Drill

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