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IADC637 4 5/8 "(118mm)
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Tricone cov menyuam me IADC637 4 3/4 "(120mm) rau cov pob zeb nyuaj drilling
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Pob kws hniav tricone biit IADC637 5.5 "(140mm)
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API Hoobkas ntawm TCI tricone biit IADC637 6 "(152.4mm) hauv Tshuag
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API TCI tricone pob zeb ntsis IADC637 6 3/4 "(171.4mm)
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API Tricone ntsis nqi IADC637 8 1/2 "(215.9mm)
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Rotary khawm laum ntsis IADC617 12 1/4 nti (311mm)
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API Tricone laum khoom chaw tsim tshuaj paus IADC637 12 1/4 "(311.1mm)
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Hlau kaw laum ntsis IADC637 14 3/4 "(374.6mm) rau qhov tob tob
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Peb lub cones IADC637 17 1/2 "(444.5mm)
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Tricone khoom muag IADC637 6.5 nti (165mm) rau cov pob zeb tawv
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Rotary cov menyuam khoom IADC637 9 7/8 "(250.8mm)