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Solaraiche API de phìosan drileadh tobair creige domhainn IADC537 9 5/8″(244.5mm)
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Bit putan API TCI IADC537 9 7/8″(250mm) airson drileadh tobair creige cruaidh
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Bit Putan Rothlach IADC537 3 7/8″ (98mm)
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Drileagan trì-chònach IADC537 4 3/4″ (120.6mm)
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Drile tricone API IADC537 14 3/4″ (374mm) airson creig chruaidh
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Bìdean Tricone IADC537 4 5/8″ (118mm)
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Pìos creige tricone API IADC537 5 1/4″ (133mm)
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Drile-chreige API IADC537 5 1/2” (139.7 mm) airson tobar cruaidh
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Drileagan API IADC537 5 5/8″ (142.9mm)
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Drileagan carbide tungsten aig astar luath IADC537 5 7/8″ (149mm)
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Pìosan creige tricon IADC537 6 òirlich (152.4 mm)
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Bit rothlach tricone IADC537 6 1/4 òirleach (159 mm)