China 380mm Hole Opener Reamer Drilling Bit Factory

Model Name :：China 380mm Hole Opener Reamer Drilling Bit Factory

17 1/2" Hole Opener for Interchange Roller Cone

Model Name :：17 1/2" Hole Opener for Interchange Roller Cone

East Drilling Reamer Bit Tricone Cutter Drill Bit for Construction Drilling

Model Name :：East Drilling Reamer Bit Tricone Cutter Drill Bit for Construction Drilling

Rock Core Barrel with 8 1/2" Single Roller Cone

Model Name :：11516

API 22 inch Hole Opener Reamer Bit

Model Name :：16516511

API 30" Hole Opener Reamer Drill Bit for Well Drilling

Model Name :：1521321