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Mata vili vaieli papa API IADC537 10 5/8 inisi (269mm)
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API tolu cones bit IADC537 11 5/8″(295mm) mo vaieli malo
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Mata fa'ata'amilomilo tri-cone IADC537 12 1/4″(311mm)
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Mata vili papa ua fa'amaufa'ailogaina i Sasa'e Mamao IADC537 13 5/8″(346mm)
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O le viliina o le Tricone roller bit IADC537 15.5″(393.7mm) mo le vaieli loloto
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Mata vili TCI IADC537 16″(406.4mm)
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Fa'aofi le u'amea tricone Tungsten Carbide IADC537 17.5″ (444.5mm)
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API & ISO tricone roller bit IADC537 26″(660.4mm)