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81/2"HM662XAG 6 Blade Matrix Body Diamond Pdc Drill Bits For Rock Drilling Tools
Спираль геологической буровой штанги
바위에 대 한 비트 81/2"HM952XAG 고품질 Pdc 드릴 Bits.drill Daimond 드릴링
Jeolojik Matkap çubuk
Karbür matkap
6"HM362XA 6 Blades Matrix Body Oil Drilling Pdc Drill Bit For Oil Field Drilling
Punte di trivello di alesatura
Than đá khoan Bit
Üç çapa Bit
Côtes de deux escaliers PDC carottage avec mèches
Coste di due-scala PDC carotaggio punte da trapano
Đôi ống kim cương lõi Bit
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