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Pìos drile carbide tungsten àrd-astar IADC537 5 7/8 ″ (149mm)
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Bidh creag triccone a’ sgoltadh IADC537 6 òirleach (152.4 mm)
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Bit tricone rothlach IADC537 6 1/4 òirleach (159 mm)
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Bidh creag tricone TCI IADC537 6 3/4 ″ (171mm)
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Pìos putan API IADC537 6.5 òirleach (165mm) le prìs lasaichte
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Pìos roc TCI IADC537 7 1/2 ” (190 mm)
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Bit tricone factaraidh API IADC537 7 5/8 ” (193.7 mm)
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TCI tricone bit IADC537 7 7/8 òirleach (200 mm)
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Tungsten Carbide Insert Bit IADC537 8 1/2 ″ (215.9mm)
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Pìos drile creige putan API IADC537 8 3/4 ″ (222.2mm) le prìs lasaichte
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Pìos drile TCI IADC537 9 1/2 ″ (241mm) airson tobar ola creige cruaidh
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Pìosan drileadh tobar creige API IADC537 10 5/8 òirleach (269mm)