Bundle Micro Mini Twist Drill Bits Tungsten Carbide Set (20 pieces)
10pcs Carbide Micro Drill, Large Scraps Discharge Space 0.3-1.2mm Drill Bits, for PCB Print Circuit Board.0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1.0mm, 1.1mm, 1.2mmand10pcs Carbide Micro Drill, Large Scraps Discharge Space 0.1-1.0mm Drill Bits, for PCB Print Circuit Board0.1mm, 0.2mm, 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1.0mm-Shank diameter: approx. 1/8 (3.175mm).-Tip spiral flute tungsten carbide drill bits with sharper cutting edge, reduce cutting force and prevent drill broken, improve the drilling accuracy.-wonderful for drilling PC Boards, Plastics, Fiberglass, Wood, supple Metals, etc.-Carbide tipped drill bits with high hardness, high wear resistance, high strength, resistance to bending, anti-impairment and long tool life. -2 x 10pcs Carbide PCB Drill Bits with Protection Box.