Features: Carbide rods and tungsten steel rods, with high hardness, high wear resistance, high strength, resistance to bending, anti-impairment and long tool life. Range of processing: PCB, SMT, the CNC, mold, plastic, copper, stainless steel and other precision metal parts processing. Drill bit chip evacuation space large, chip evacuation resistance small, chip removal smooth. In favor of efficient cutting, avoid offset drilling.