Oil Drilling Bit manufacturers, China Oil Drilling Bit ...
12-1/4' 8 Blades Down Hole PDC Drill Bit For Oil Drilling Tool. US 5 Piece. 500 Pieces (Min. Order) Lead Time: 45 days. FOB Port: China (Mainland) Freight Cost Available. Inquire Now Compare. HANGZHOU FANXI TOOLS CO., LTD.
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