If you are creating homemade PCB’s you’ll need a drill set like this. These bits can create the tiny holes needed for a PCB.
Here are the drill bits included:
0.30mm/0.012"
0.40mm/0.016"
0.50mm/0.020"
0.60mm/0.024"
0.70mm/0.028"
0.80mm/0.031"
0.90mm/0.035"
1.0mm/0.039"
1.1mm/0.043"
1.2mm/0.047"
Be aware these are all solid carbide. They are super sharp and can break if dropped or moved while drilling. They should only be used with a drill press or CNC machine.