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8 1/2 ʻīniha PDC Drill Bit M137 no ka ʻeli ʻana i nā pōhaku paʻakikī loa
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7 mau pahi PDC wili ʻoki M137 8.5 ʻīniha no ka luawai kahua aila
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Hale hana API o ka bit PDC no ka ʻeli ʻana i ka luawai ma ka waihona
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ʻO ka hale hana API PDC Bi Center Bit no ka ʻeli ʻana ma lalo o ka Reamer
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Nā ʻāpana ʻeli pōhaku API PDC kūʻai nui no nā ʻano paʻakikī