50 Pcs Micro Drill Bit Set Micro Drill Bits Tungsten Steel PCB Print Circuit Board Flute CNC Router Bits Shank for Rough Stone Jewelry Punching Engraving (0.3-1.2 mm)

• 【Premium Material】The micro drill bit set is made of high-quality tungsten steel, with high wear resistance, high hardness, not easy to bend, and has good milling and cutting performance.
• 【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.
• 【Multiple Sizes】This PCB drill bit set contains 10 different sizes: 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1mm, 1.1mm, 1.2mm, 5 pieces for each size, to meet your different needs.
• 【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.
• 【Wide Application】These tungsten carbide drill bits are ideal for drilling holes in printed circuit boards, CNC engraving glass, amber beeswax, bakelite, jewelry, plastic and other precision drilling.

Quality Service Your satisfaction is our greatest concern. If you have any questions or dissatisfaction with the product, please feel free to contact us and we will provide you with the best solution. Specification Product name: micro drill bit set Color: mixed color Material: tungsten steel Size: see picture Packing method: bag Packing List 50pcs small drill bits (0.3-1.2mm, 5pcs each size)