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9 1/4 ”Izinyo lensimbi elinezinyo ezithathu

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8 5/8 ”Izinyo lensimbi elinezinyo ezintathu

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12 1/4 ”I-TRICONE BIT IADC114/117/127/217/317

IADC114/117/127/217/37

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16 ”I-PDC bit enezinhlanu

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17 1/2 ”I-PDC bit enama-blade amahlanu

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17 1/2 ” TRICONE BIT IADC114/117/127/217/317

IADC114/117/127/217/37

Bona okuningi