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API bọtini bit IDC537 6,5 inches (165mm) pẹlu ẹdinwo owo
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TCI apata bit IDC537 7 1/2 ”(190 mm)
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API factory tricone bit IDC537 7 5/8 ”(193.7 mm)
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TCI tricone bit IDC537 7 7/8 inches (200 mm)
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Tungsten Carbide Fi Bit IDC537 sii 8 1/2 ″(215.9mm)
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API Bọtini apata lu bit IDC537 8 3/4″(222.2mm) pẹlu idiyele ẹdinwo
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TCI lu bit IAC537 9 1/2 ″(241mm) fun epo-lile apata
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API apata liluho daradara die-die IDC537 10 5/8 inches (269mm)
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API awọn cones mẹta bit IDC537 11 5/8 ″(295mm) fun kanga lile
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Yiyi konu oni-mẹta IDC537 12 1/4 ″(311mm)
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Irin edidi Jina Eastern apata lilu bit IAC537 13 5/8"(346mm)
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API tricone drill bit IDC537 14 3/4″ (374mm) fun apata lile