Features 1. Implants and instruments are designed with anatomical data for easy surgery 2. Rod (Various 5.7mm Pre-cut rods, Laser marked contour line) 3. Pedicle screw which is easy to insert (Optimal stress distribution, Protection of screwpull-out, Easy insertion) 4. Nut designed for increasing stability (Reverse trapezoidal thread design). 5. Inner type locking system 6. Cross link which is easy to use and add stability (Free angulations & Free lengthening,Simple assembling, Self positioning)