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API tricôneorum cuspides praebitor IADC117 5 7/8 unciarum (149mm)
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Eme terebras triconicas IADC117 12 1/4 unciarum (311mm)
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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)
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Tesserae triconicae IADC117, 6 1/4 unciarum (159mm) in grosso pretio venditae.
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Fabricatores terebrarum tricônicarum IADC117 6 3/4 unciarum (171mm)
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Terebrae triconicae IADC117 7.5 unciarum (190mm) ad puteos saxorum durum fodendos
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Tesserae tricônicae saxorum IADC117 7 7/8 unciarum (200mm)
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Officina API terebrarum triconicarum ad saxa perforanda IADC117 8 1/2 uncias (216mm)
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Terebrae API IADC117, 8 3/4 unciae (222 mm) ad puteos perforandos
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Terebrae rotatoriae API IADC117 9.5 unciarum (241mm) in promptu