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Steel Body Polycrystalline Diamond Compact Bit 6 1/2″ S135 5 izindwani
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I-Wholesale diamond 13/16/19mm umkhiqizi wokusika we-PDC
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8.5" amayintshi abahlinzeki be-PDC Bi center bit okusika amatshe okumba amatshe
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I-API 8 1/2″ PDC Reaming Bits for Hard Rocks Drilling
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I-API Reverse circulation rock drilling bits PDC for rock hard