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Giotán druileála ar phraghas íseal IADC217 14 3/4 orlach (374mm) le haghaidh carraige crua
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giotán druileála mórdhíola IADC217 17.5 orlach (444.5mm)
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Giotán druileála tríchóin IADC114 15.5 orlach (394mm) i stoc
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Monarcha giotán cruach fiacail tricone IADC114 17.5 orlach (444.5mm)
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Giotán druileála breiseán stroighne IADC127 4 3/4 orlach (120mm)
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Giotán druil saincheaptha API IADC126 5 1/4 orlach (133mm) le haghaidh carraige crua
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Giotán fiacail muilne le haghaidh druileála tobair IADC215 17.5 orlach (444.5mm)
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Praghas giotán druil API tricone IADC216 4 5/8 orlach (118mm)
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Giotán tricone domhain go maith IADC216 6 orlach (152mm)
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soláthraí giotán rig druileála API IADC216 5 3/4 orlach (146mm)
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Druileáil triocne API IADC125 17 1/2 orlach (444.5mm)
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Ceann druileála tobair API IADC126 7 1/2 orlach (190.5mm)