3 sizes of Buttercup prep diamondX bits to meet your needs. 

Features:

• Long, flat body to prevent uneven filing on the nail plate
  
• Perfectly rounded tip safe for skin and nails
• Evenly distributed grit throughout
• 150 grit
• Highly effective wet or dry
• Perfect for manicures and pedicures
• Designed for prepping/ filing/ polishing
• Standard shank size 3/32 for most professional e-files
• Left or right handed.
• Use in forward or reverse.