Description: PCB drill with carbide (tungsten steel) material, with high hardness, high wear resistance, high strength, anti-bending, anti-breakage, etc. Specification: Material: Hard alloy (tungsten steel) Size: 0.1-1mm; 0.3-1.2mm; 1.1-2.0mm Shank Diameter: 3.175mm Suitable for circuit boards, electronic, SMT, mold, metal processing, telecommunications and other industries Can be used for drilling iron, glass fiber, etc. Feature: bit chip space is large: small chip resistance, chip and smooth, heat a small drill, drill reduce pollution; extraordinary cutting edge sharpness: As a result of nanotechnology and advanced grinding technology, bit more sharp cutting edge than before, can reduce the cutting force, reduce the broken drill rate, improve the hole wall quality; cutting edge strictly symmetrical: beneficial and efficient cutting, avoid offset drilling. Package include: 10x PCB CNC drill Bits 0.1-1mm 0.3-1.2mm 1.1-2.0mm