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8 1/2 tommers Hainaisen populære størrelser Tricone Bit / vann godt TCI Tricone biter/høy kvalitet Tricone Drill Bit

populære størrelsene tricone bit / vann godt TCI tricone biter/høy kvalitet tricone borekronen,Website:, nye stål tann bit, myk og mellomstore formasjon/tricone bit/boring


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