... bit, PDC core bit,4/5/6 blades PDC bit1. Symmetrical parabola crown profile, asymmetrical bit blades ,the cutters are distributed as the ... drill cuttings and cooling.<5>. Equipped with back reaming teeth.<6>. The cutter is high performance to increase the ability ... when you enquiry.Diameter ,Bit body ,IADC code, Number of blades, Main Cutter size,Thread Connection, Drilling formation, material. Drill ...