Jadeshay PCB Drill Bits,10pcs Micro Bits Cemented Carbide Mini Hole Bit 0.6mm to1.5mm,for CNC Engraving Print Circuit Board Jewelry Stone

【Multi Size】This set contains 10 different size drill bits diameter: 0.6 mm, 0.7 mm, 0.8 mm, 0.9 mm, 1 mm, 1.1mm, 1.2mm,1.3mm, 1.4mm, 1.5mm,offers a wide range of operations to meet a variety of needs. 【High Precision】The PCB tip spiral groove reduces cutting force and broken drill, improve the quality of hole wall.Drill bit has a large scraps discharge space, little resistance and smoothly during the scraps discharge. 【Ideal Mini Drill Bit】Easy to carry and store,great for circuit boards, CNC, engraving, jewellery, glass, wood, metal plastics,other precision drilling and 3D printer nozzle cleaning. 【Protective Packaging】Come in a great storage container that is easy to find and grab the drill bit you need when you need.Easy to change out and do a great job cutting through the PCB for solder holes. 【High Quality】Each PCB drill bit has a sturdy handle is covered with silicone for support during drilling. Made of high quality tungsten steel, highly wear resistance, high hardness, bending strength.