Description:<br> 10pcs Carbide Mini PCB Drill Bits CNC Jewelry Rotary Tool 0.3mm to 1.2mm<br>  <br> Specifications:<br> Material: Carbide (tungsten steel)<br> Diameter: 0.3mm\/0.4mm\/0.5mm\/0.6mm\/0.7mm\/0.8mm\/0.9mm\/1.0mm\/1.1mm\/1.2mm<br> Shank Diameter: 3.175mm<br> Total lenght: 38mm<br> Fit for: PCB drilling machines， engraving machine， CNC and high precision special drilling equipment.<br> Quantity: 10pcs<br>  <br> Features:<br> Large drill bit chip space， chip resistance，Chip smooth， small drilling heat， reduce smear.<br> Drill has a large scraps discharge space，little resietance and smoothly during the scraps dischange.<br> Using high quaility materials and fine grinding process makes bit more sharp cutting edge，reduce cutting force and broken drill and improve the quality of hole wall.<br> Cutting edge strictly symmetrical: beneficial and efficient cutting， avoid offset drilling.<br> Carbide PCB CNC Drill Bits replacements for your CNC machines and any Handheld tool: Dremel， Jewelry.<br>  <br> Package Included:<br> 1x Case (0.3-1.2mm) Drill Bit<br>  <br> More Details: