The reamer mainly consists of four or more cones. Cutting Structure with premium tungsten carbide hardfacing or premium tungsten carbide insert of formulas and new techniques is utilized, and increases wear-resistance capability of reamer. The pilot is tricone bit.Seal and Lubrication High performance HNBR O-ring for bearing seal and advanced grease for lubrication. Product Application It is suitable for the large size well, mining and infrastructure applications. Current Main Availability Recommended Drilling Parameter