Check the listing for details. 30pc .2mm .3mm .4mm Micro Drill Bit Kit Modeling Watch Repair more... Condition: New. Listed at 23.95 USD. For Miniatures, Modeling, Jewelry, Precision Carvings, Plastics,Watch Repair .. .2mm .3mm .4mm These uses and more... Hand cleaning the nozzle head to your 3D printer Small scale miniatures Dollhouse Miniatures Modeling: Cars, Trucks, Trains ..... Wire for jewelry Sandings Carvings Drilling Instertion Holes Piercing Saws or Fret Saws Jewelry Making Woodworking Plastics CNC drilling PCB drilling THE BITS These bits are the same brand used by the Samsung Company in South Korea in their high-speed production lines. They are also being used by people all over the world for hand drilling uses mentioned above and countless dremel uses as well. Whether looking to drill holes at high speeds to make jewelry OR hand drilling plastics or small-scale minatures with a Pin Vise, these are the drill bits you can count on! 5 each .20mm .30mm .40mm