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API leveransier fan djippe rotsboarringsbits IADC537 9 5/8 "(244.5mm)
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API TCI knopbit IADC537 9 7/8 "(250mm) foar boarjen fan hurde rotsputten
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Rotary Button Bit IADC537 3 7/8" (98mm)
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Tricone bits IADC537 4 5/8" (118mm)
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Tricone drill bits IADC537 4 3/4" (120.6mm)
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API tricone rotsbit IADC537 5 1/4" (133mm)
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API rotsboar IADC537 5 1/2 "(139,7 mm) foar hurde put
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API drill bits IADC537 5 5/8" (142.9mm)
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Hege snelheid wolfraam carbid drill bits IADC537 5 7/8 "(149mm)
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Tricone rotsbits IADC537 6 inch (152,4 mm)
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Rotary tricone bit IADC537 6 1/4 inch (159 mm)
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TCI tricone rotsbits IADC537 6 3/4" (171mm)