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Ngwuputa olulu mmiri miri emi IAC127 13 5/8 ”(346mm) na ngwaahịa
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IDC127 14 3/4 ”(374mm) olulu mmiri nke ahaziri
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Tricone n'ogbe ibe IDC127 17.5 sentimita (444.5mm)
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Tricone rock bits IAC137 6 sentimita (152mm) maka igwu mmiri
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API tricone mkpọpu bit IDC215 8.5 sentimita (215.9mm) maka ọrịre
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API Tricone rock bits IDC215 12 1/4 ”(311mm) nwere ọnụ ahịa mbelata
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Ụlọ ọrụ mmepụta ihe API IDC216 4.5 sentimita (114mm)
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Roller cones bits soplaya IDC216 5 5/8 inch (143mm)
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Mpempe akwụkwọ mpịakọta akara IDC216 5 7/8inch (149mm)
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Egwu nha nha IDC216 6.5 sentimita (165mm) maka igwu mmiri
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Tricone ibe n'ibe na ngwaahịa IAC216 6 3/4 inch (171mm)
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API tricone mkpọpu IDC216 7 5/8 inch (194mm) maka mmanụ mmanụ