Molain Micro PCB Drill Bit Set, 20Pcs 1/8" Shank 0.1mm-1mm Solid Tungsten Steel PCB Print Circuit Board Flute CNC Router Bits for Rough Stone Print Circuit Board Jewelry Engraving - 590775_1_71cvKF0G

• Multi-Size PCB Drill Bit: The PCB drill bit set contains various sizes of drill diameter, 0.1 mm/0.004 inch, 0.2 mm/0.008 inch, 0.3 mm/0.012 inch, 0.4 mm/0.016 inch, 0.5 mm/0.020 inch, 0.6 mm/0.024 inch, 0.7 mm/0.028 inch, 0.8 mm/0.032 inch, 0.9 mm/0.035 inch, 1 mm/0.039 inch, shank diameter: 3mm /0.12 inch(1/8"), overall length: 38mm/1.49inch. Each size has 1 piece, a total of 20 pieces in 2 boxes. Safe material: PCB drill bits are made of quality tungsten steel, high hardness, good toughness, wear resistance, high strength, and resistance to bending. The anti-vibration design of the blade makes it stable and reliable during engraving. Carbide material with good milling and cutting performance can ensure high work efficiency. Wide Application: 0.1-1 mm drill bits set are suitable for drilling PCB, acrylic, plastics, fiberglass, wood, aluminum, and soft metals. They are used on PCB drilling machines, engraving machines, CNC lathes, and machining centers. Use vertically and take good control of your CNC speed. Improve precision: Micro drill bits set adopts pointed cutting edges, sharp cutting edges provide smooth cutting, reduce cutting force, prevent drill breaking, and improve the drilling accuracy—spiral chip space design for fast and clean chip removal. The toolset can work quickly and cleanly, with no glitches or scrap left. What You Get: The package comes with 20 pieces of tungsten carbide micro drill bits in 2 sets, 10 pieces each set, packed in a box, which is easy for storage. The longer the length of the tool clamped by the chuck, the better. If the clamping length is shorter, you need to lower the feed rate and cutting speed to reduce vibration and extend the tool life.