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API Mill eze iberi IDC217 12 1/4 inch (311mm) maka mkpọpu ala ọma jijiji
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Ngwupu ala ọnụ ala IDC217 14 3/4 inch (374mm) maka nkume siri ike
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Ngwupu ala n'ùkwù IDC217 17.5 sentimita (444.5mm)
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4 1/4 inch PDC Dọrọ Bit 3 Blades
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Ụlọ ọrụ API nke TCI tricone bit IDC617 5 5/8" (142.9mm)
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API rotary tricone bit IDC617 6 ”(152mm) maka igwu mmiri
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Tricone rock bit IDC617 8 1/2" (215.9mm) maka igwu mmiri.
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API emeputa nke tricone rock bit IDC617 9 7/8 inch (250mm)
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Ụlọ ọrụ API nke tricone roller bit IDC617 12 1/4 inch (311.1mm)
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Ụlọ ọrụ API nke mkpọpu nkume IDC617 17 1/2 inch (444.5mm) na ngwaahịa
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API tungsten carbide tinye nkume dill bit IDC627 3 7/8 ″ (98mm) na ngwaahịa
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Rotary rotary bit IDC627 8 1/2 ″ (215mm/216mm)