Description:45 Degree 0.1mm Carbide Engraving Bits CNC Router Tool for PCB Board<br> This  V-shape carbide flat bottom engraving bits is perfect replacements for your CNC\/PCB machinery， make you enjoy a precise， easy cutting experience.  <br> Specification:               Product Type         Flat bottom engraving bits               Material         Solid carbide               Degree         45                Shape         V-shape               Shank diameter         3.175mm               Cutting edge diameter         0.1mm                Total length         31.35mm\/1.23&amp;quot;               Weight          4g               Feature         High efficiency &amp;amp; large capacity Chip elimination               Application         plastics ，Wood，Fibre glass，Carbon，PCB board such as circuit boards，most plastic such as Acrylic ABS，Metal such as aluminum.      <br>  <br> Package included:<br> 1x PCB Engraving Bit