34mm rock taper button bits, 34mm rock taper
High Quality Hard alloy 34mm 8 Buttons 7degree/12degree Tapered Rock Drilling Tools Button Drill Bit About Our Products Name button drill bits Brand Drills-King Size ¢30mm~¢127mm Application Soft rock, loose-medium rock, hard rock and any other special formations Button bit face design flat face, dome face, drop center face Thread R22, R25, R28, R32, R35, R38, T38, T45, T51, ST58, T60 ...
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