Roller Cone Bit

8 1/2 Tricone Bit Thirds HDD 133mm Roller Cone Bit

IADC637 Metal Face Sealed Bearing 9 7/8 Roller Cone Bit

API Certificate Core Barrel 133mm Roller Cone Bit

Thirds Of 8 1/2" Full Covered Tungsten Carbide Inserts Roller Cone Bit

Replaceable Block Hard Rocks Drilling 251mm Roller Cone Bit

142mm Single Cone Bit

320mm Roller Cone Bit

Tricone Drill Bit

8 1/2 Tricone Bit Thirds Roller Cone Bit , IADC637G For HDD Rock Reamer , Rock Hole Opener

Foundation Replaceable Type Single Cone Bit for Rotary Drilling Rig Drilling Bucket

Metal-face Sealed Bearing Roller Cone Bit For HDD Rock Reamer

Full Covered Tungsten Carbide Inserts Roller Bits for Hard Rocks Drilling Core Barrel

320mm Block Leg Roller Cone Bits for Block Leg Reamers

251mm Replaceable Block Leg Roller Cone Bits For Hard Rocks Drilling HDD Rock Reamers

Mill Tooth Roller Cone Bits IADC127G Sealed Bearing For Soft Formations

Rock Piling Roller Bits , Roller Cones for Rock Drilling Bucket

Hard Rock Drilling Tricone Bit Thirds IADC637G for HDD Rock Reamer , Rock Hole Opener

14 3/4 Inches Tricone Bit Segments Cone Bits IADC537G

169mm Piling Roller Cone Bits , Single Roller Bits for Rock Drilling Bucket

Replaceable Roller Cone Bit with Flange for Rotary Drilling Rock Bucket or Shield Machine