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Pretium terebrarum triconicarum API IADC216 4 5/8 unciarum (118mm)
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Terebrae triconicae putei profundi IADC216 6 unciae (152 mm)
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Caput perforatorium puteorum API IADC126 7 1/2 unciarum (190.5 mm)
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Terebra cum ferculo obsignato bts IADC126 9 7/8 unciarum (250mm)
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Terebrae triconicae IADC126, 12 1/4 unciarum (311 mm) ad puteos perforandos.
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Terebra triconica adamantina IADC216 7.5 unciarum (190mm)
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Terebrae triconicae officinae IADC216 9 7/8 pollices (250.8 mm)
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Terebrae API Tricone IADC111 15.5 pollices (394 mm) in promptu
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Terebrae triconicae IADC114 15.5 unciarum (394 mm) in promptu.
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Fresae ferreae dentes IADC117 3 7/8 unciarum (98.4mm)
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Caput perforationis puteorum API IADC117 4 5/8 unciarum (117.5mm) pro machina perforatrice
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Officina API terebrarum triconicarum dentibus ferreis IADC117 6 pollices (152mm)