50pcs Carbide PCB Drill Bits Set (0.3mm-1.2mm) for PCB, Stone, Jewelry, and CNC Engraving

About this item

• 【High Quality】The PCB Drill Bits are made of high quality tungsten steel, highly wear resistance, high hardness, bending strength, anti-impairment, highly working efficiency.
• 【Multi Size】This Set contains 10 different size drill bits diameter: 0.3mm, 0.4mm, 0.5mm, 0.6 mm, 0.7 mm, 0.8 mm, 0.9 mm, 1 mm, 1.1mm, 1.2mm, each size have 5 pcs.
• 【Good Package】Package with high quality plastic box, easy carry and better protection keeps the blade tip goods in the delivery from being damaged.
• 【High Precision】 With sharp cutting edge, milling groove and clean surface, these sets of tool work quickly and cleanly, no glitches or scrap left.
• Perfect for cleaning 3D printer nozzles, amber beeswax, circuit boards, bakelite, CNC engraved plexiglass, jewelry, metal, plastic, and other materials that require precision drilling.