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
Non-sealed Roller Air Bearing Mining Roller Cone Bits Tricone Roller Rock Bit 6 12 14 5 12 Tricone Drill Bit This series bits are non-sealed Roller Bearing bits that are cooled and cleaned by air with fast ... Read More
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