Feature *Brand new and high quality *Carbide (tungsten steel) material, with high hardness, high wear resistance, anti-bending, anti-damage *Chip resistance is small, smooth chip removal, drilling heat a small, reduce drilling *Conducive to efficient cutting, avoid drilling offset *Applicable on the circuit board, electronics, SMT, shape, metal processing, communication *Can be used for drilling iron, glass fiber, etc *Material: Hard alloy (tungsten steel) Specifications Size: 1.1mm1.2mm1.3mm1.4mm1.5mm1.6mm1.7mm1.8mm1.9,mm2.0mm Shank Diameter: 3.175mm Colorrandom Quality10pcs Package Included: 10 * PCB CNC drill Bits 1.1mm to 2.0mm Note: 1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 2. Please allow slight manual measurement deviation for the data.