Uxcell 4.05mm Dia 1/8 Shank Tungsten Carbide Spiral Flute Micro PCB Drill Bits

4.05mm Dia 1/8 Shank Tungsten Carbide Spiral Flute Jewelry CNC Engraving Print Circuit Board Micro PCB Drill Bits Long Tool Life: Made from tungsten carbide high hardness high wear resistance high strength resistance to bending anti-impairment long service life. Spiral Flute Bits: Spiral flute drill bits reduce cutting force and prevent drill broken improve the drilling accuracy. Large drill bit chip space chip resistance chip smooth small drilling heat. Precision: With with sharper cutting edge milling groove and clean surface the carbide PCB drill bits can work quickly and cleanly no glitches or scrap left. Applications: Great for PC boards plastics fiberglass wood soft metals. Suitable for PCB drilling machines engraving machine CNC and high precision special drilling equipment. Tips: The drill bits are too tiny so it is very fragile for handling. Please be careful and take good control of your CNC speed. Package Included: 1 Pack x PCB Drill Bits