Features： 1、Comes with 19 different polishing heads, so you can easily and quickly reshape, polish, smoothen, grind, sharpen, remove nail polish, exfoliate, sculpt and smoothen gel nails or acrylic nails. 2、There are many types and specifications of grinding heads, complete functions, and interchangeable use. 3、2.35mm nail drill bit shank diameter, which is suitable for most nail drill on the market. The shank is made of tungsten steel, which is durable. 4、 nail art tool for any professional nail artist or novice nail artist, suitable for home use and nail salon. 5、Equipped with box for easy storage, light weight and in small size, easy to carry when going out. It can meet the needs of different nail art. Specification： Item Type: Nail Drill Bit Set Material: Tungsten Steel, Carborundum, Rubber, Ceramic Shank Diameter: Approx. 2.35mm / 0.1in Product Features: Used for manicure, nail polishing, nail salon, foot care, pedicure, nail polish removal, etc. to be used with nail polishers. Product Application: Household, nail salon, etc. Package List： 19 x Nail Drill Bit 10 x Sanding Band