PDC cutter consists of a spherical cemented carbide substrate and diamond table. By optimizing diamond powder grain size,percentage, powder treatment process. Temperature and pressure, the PDC cutter can achieve high wear and impact resistances, suitable for drilling high abrasive formations. The sizes range from Φ5-Φ25. Various shapes such as ball-type cutter,bevel ball cutter, wedge type cutter. They are mainly used in both PDC bits and roller cone bits.