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Giotán Fiacail Cruach IADC117 3 7/8 orlach (98.4mm)
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Ceann druileála tobair API IADC117 4 5/8 orlach (117.5mm) le haghaidh rig
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soláthraí giotán tricone API IADC117 5 7/8 orlach (149mm)
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Giotán druil API Tricone IADC111 15.5 orlach (394mm) i stoc
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Soláthraí giotán druil API IADC117 8 3/4 orlach (222mm) le haghaidh druileála tobair
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Giotán druileála tricone fiacail meilte API IADC114 12 1/4″(311mm)
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Giotán druileála Tricone IADC117 7.5 orlach (190mm) le haghaidh tobair carraige crua
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Giotán carraige tríchóin IADC117 7 7/8 orlach (200mm)
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Monarcha API de ghiotán tricone fiacail cruach IADC117 6 orlach (152mm)
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Giotán sorcóir Rothlach API IADC117 9.5 orlach (241mm) i stoc
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Monarcha API de ghiotán druil carraig tricone IADC117 8 1/2 orlach (216mm)
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Giotán tricone mórdhíola IADC117 6 1/4 orlach (159mm)