General description These 10pcs 0.5mm Tungsten Carbide Rotary Drill Bits are designed for precision drilling in various materials including PCB, plastics, fiberglass, wood, and soft metals. The bits feature a spiral tip that reduces cutting pressure, enhances drilling accuracy, and minimizes the risk of breakage. Technical specifications Drill diameter: 0.3-1.2mm Shank diameter: 1/8" (3.175mm) Total length: 38mm Other information Package includes: 10 PCB carbide drill bits with protective case Made from carbide rods and tungsten steel rods for high hardness and wear resistance Long tool life with high strength and resistance to bending