Carbide E-file Bit (Red)
Carbon drill bits are used doing artificial nails. They are brilliant to work on gel/ acrylic surface.
Red barrel is fine coarse bit used to remove gel/acrylic bulky surface or gel polish/shellac form natural nails.
Working surface length - 13mm, diameter (widest part) - 5mm.
You can disinfect and sterilise them. Professional use only.