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API dräi Kegelbit IADC537 11 5/8 ″ (295 mm) fir schwéier gutt
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Rotéierend Tri-Cone Bit IADC537 12 1/4" (311 mm)
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Metal versiegelt Far Eastern Rock Bohrbit IADC537 13 5/8 "(346mm)
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API Tricone Buer IADC537 14 3/4 ″ (374 mm) fir Hard Rock
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Tricone Roller Bit Bohr IADC537 15,5 ″ (393,7 mm) fir déif Well
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TCI Bohrbit IADC537 16" (406.4mm)
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Wolfram Carbide Insert Tricone Bit IADC537 17.5" (444.5mm)
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API & ISO Tricone Roller Bit IADC537 26" (660.4mm)