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Centering bit 48-20-5495 (included) is recommended for exact spot drilling and to avoid bit wandering during use. the drift key 48-20-5497 (not included) allows for easy removal of the centering bit. the one piece core bits are available in sds-max or spline shanks, ranging from 1-1/2” to 6” diameters and overall lengths of 11-3/8” or 22”, with a drilling depth of 3”.

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Dth drill bit, drilling tool, drill bit manufacturer / supplier in china, offering hjg high performance 6 inch rock drill dth hammer, cemented carbide for mining, crawler hydraulic well-geothermal drilling rig hjg-w828a and so on.

Drill collar, drill pipe, kelly manufacturer / supplier in china, offering mini multi-function snow blower grass cutter, api gas drilling friction welding drill pipe drill tool 4 1/2" g105 or s135, api water well drilling friction welding drill tool 4 1/2" g105 or s135 and so on.

Professional boring drill bits wholesaler goods of China supplier for international and neighborhood trade company.Being the most beneficial products of our factory,our boring drill bits wholesaler merchandise series happen to be tested and won us professional authority certifications. For extra parameters and item list specifics,please click the button to have additional information.


boring drill bits wholesaler exporter from China, we are the most expert supplier from USA with ISO9001 Certification. Also the items have been certified by mutiple security certification.We'll offer you our boring drill bits wholesaler priducts in top-quality and most favourable price.

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