20Pcs PCB Drill Bits Set, 1/8" Shank Micro Twist Bit Spiral Flute Carbide for Print Circuit Board Stone Dremel Jewelry CNC Engraving - FOCMKEAS 0.5mm

• 【Size】Cutting edge diameter: 0.5mm. cutting edge length: 7mm(0.28"). shank diameter: 3mm (1/8")， overall length: 38mm(1-1/2"), Package include 20 pieces PCB drill bits. 【Material】The PCB Drill Bits are made of high quality tungsten steel, highly wear resistance, high hardness, bending strength, anti-impairment, highly working efficiency. 【Feature】Spiral Flute Bits: Tip spiral flute drill bits with sharper cutting edge, reduce cutting force and prevent drill broken, improve the drilling accuracy. milling groove and clean surface, these sets of tool work quickly and cleanly, no glitches or scrap left. 【Safe Package】Package with high quality thicken plastic box, easy carry and better protection keeps the blade tip goods in the delivery from being damaged. 【Application】Great for PC Boards, Plastics, Fiberglass, Wood, Soft Metals. Fit for: PCB drilling machines, engraving machine, CNC and high precision special drilling equipment