1.Bit name:rock bit,TCI tricone bit,insert tricone bit,button bit
2.cutting structure:
   The durability of premium tungsten carbide insert is improved with new formulas and new techniques for insert bit
3.Bearing Structure:
   High precision beaaring with two thrust faces.Ball look the cone.Hardface head bearing surface inlaid with friction-reducing alloy and the silver-plated.Abrasion insistance and seizure resistance of the bearing are improved
4.Seal and lubrication
   Premium O-ring,optional seal compression and curved seal structure can enhance the seal performance.The pressure compensator system and advanced grease can grealy increase the lubricating reliability.