... 1:380,000. Impa ct resistance:520J Our cutter is our most advanced PDC cutter at present. Developed in 2006 and has ... higher than the old series. 3. Wear resistance is a bit higher than old series. 4. Heat resistance is improved to ... ,1308,1504,1508,1604,1608,1908The advantages of the new cutter is based on the improvement of the technology, which has ...