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API factory ti TCI tricone biit IDC637 6 “(152.4mm) ni iṣura
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API TCI tricone apata bit IAC637 6 3/4 ″ (171.4mm)
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API Tricone owo bit IDC637 8 1/2 "(215.9mm)
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Bọtini Rotari lu bit IDC617 12 1/4 inches (311mm)
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API tricone drill bits olupese IDC637 12 1/4 ”(311.1mm)
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Irin edidi lu bit IAC637 14 3/4 ”(374.6mm) fun kanga jin
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Awọn cones mẹta bit IDC637 17 1/2 ”(444.5mm)
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Tricone bits olupese IDC637 6.5 inches (165mm) fun apata lile
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Rotari rola die-die IDC637 9 7/8 ”(250.8mm)
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TCI tricone bit IDC417 17.5″(444.5mm)
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Tricone rock bit IDC417 8 1/2"(215.9mm)
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TCI tricone bit IDC447 8 1/2 inches (215.9mm)