Tci Tricone Three Cone Rock Roller Drill Bit For Oil Rig And Mining API oil rig drilling rock bits 60mm,65mm,76mm,93mm,95mm,98mm(3 7/8),101.6mm,114mm,118mm,120mm,127mm(5) 130.1mm(5 1/8),133.3mm(5 1/4),139.7mm(5 ... Read More
8 1/2" IADC Code 537 617 437 Tri-Cone Hard Rock Roller Tricone Drill Bit For Granite Non-sealed Roller Air Bearing Mining Roller Cone Bits This series bits are non-sealed Roller Bearing bits that are cooled and ... Read More