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Caput putei perforatorium IADC126 3 7/8 unciarum (98.4 mm) pro saxo duro
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IADC126, fabrica terebrarum machinae puteorum perforandae, 17 1/2 unciae (444.5 mm)
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Terebrae triconicae officinae IADC126 26 pollices (660mm)
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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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Fresae dentium fresatae praebitor IADC126 4.5 unciae (114mm)
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Terebra API fabricae IADC126 4 3/4 pollices (120mm)
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Terebrae API trium conorum IADC126 4 5/8 unciarum (118mm) ad puteos perforandos
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Terebrae API ad usum aptatae IADC126 5 1/4 unciarum (133mm) ad saxum durum perforandum
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Tessellae triconicae ad puteos perforandos in promptu IADC126 6 pollices (152 mm)
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Terebra API Tricone IADC126 9.5 unciarum (241mm) venalis