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5-1/2” SW20 517X TCI DRILL BIT HDD WATERWELL OILFIELD TRICONE 2 7/8” API REG PIN | eBay
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Steep Taper Powerpoint Bit, Vermeer 6 bolt- 5" wide 3/4" Thick - 1/2"-13 SHCS
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Stainless Steel HDD Drill Bit
