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Shandong Yikuang Drilling Technology Co., Ltd.
7 1/2'' (190.5mm) 3 Wings Step Drag Bit 3 1/2'' API Reg Pin Thread for Soft Rock Drill Formation
7 1/2'' (190.5mm) 3 Wings Step Drag Bit 3 1/2'' API Reg Pin Thread for Soft Rock Drill Formation
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Unit Piece(s)
Sample Price US $ 200
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