TA-VIGOR 10Pcs Micro Drill Bit 0.8mm, Grey PCB Drill Bits with 1/8 Inch Shank Tungsten Carbide Drilling Rotary Tool for Print Circuit Board Stone CNC Engraving

【Size】shank diameter: 3mm / 1/8" (approx.); Cutting edge diameter (CED): 0.8mm; cutting edge length: 10mm; overall length: 38mm / 1-1/2" (approx.) 【Strong and Durable】Made of high quality tungsten steel, these micro drill bit sets are of higly wear resistance, high hardness, bending strength, anti-impairment and highly working efficiency. Strong and druble enough to have a long life. 【High-precision Cutting Edge】The micro drill bit adopts a nano-scale spiral cutting edge, which reduces the cutting force, prevents the drill from breaking, and improves the machining accuracy. 【Wide Application】Great for 3D Printer Nozzle Cleaning, Amber beeswax, circuit boards, bakelite, CNC engraving plexiglass, jewelery, metal,Fiberglass, plastic and other precision drilling. Suitable for PCB drilling machines, engraving machine, CNC and high precision special drilling equipment. 【Easy to Use】Micro drill bits are designed with shock-proof design, stable and reliable engraving process, fast and clean work without burr, large chip removal space, low drilling heat, very practical.