Suitable for medium soft to medium formation applications. Large JSA, high cutters exposure, small bake rake angle, and special shape cutters set in nose and shoulder part, these feature is for more aggressive design to improve ROP. back reaming cutters on gauge pad on each blades and spiral gauge pad, these features enhances its drilling stability and prevents the cutter's unexpected damage. The balanced hydraulics design increases the capability of anti-balling and ROP. The use of high -tech cutters improves the capability of drilling layers and the time on-bottom