Carbide drill bit, "corn," red, head diameter 5 mm/ working part 13 mmKEY FEATURES SERIES EXPERT designed for professional use by technicians of manicure and pedicure. Differs in a wide variety of shapes, sizes, and grit values of working parts. high quality materials high strength and resistance to external influences do not heat up during operation the center of rotation does not shift at high speeds withstands all types of sterilization and disinfection remove artificial materials from the nail plate used for work