The 5-In-1 Carbide Bits Are Designed To Be Multi-Purposeful. The Bit Is Great For Cleaning, Preparing, Shaping, Shortening, And Smoothing The Cuticles, Nail Surface And Under The Nail. The Tapered Edge Has Three Different Grit Sizes For It'S Multi-Purposeful Uses: A Fine Grit On Top, Medium Grit On The Middle, And Coarser Grit On Bottom... And Yes! Every Size Comes In A Gradient Grit Size Fitted To The Nail Tech'S Preference. The Finer Grit Allows The Bit To Be Used Safely When Working With Customers And Will Prevent Burning Or Cutting Clients. Middle/Medium Grit Is Useful When Removing Gels, As Well As Shaping And Making The Nail Bed Smoother. The Coarser Grit Is For Backfills, Shaping And Shortening The Nails. This Multi-Purposeful Bit Also Is Great For Any Nail Tech Who Are Left-Handed, Right-Handed, And Even Ambidextrous, As It May Be Used Clockwise And Counter-Clockwise!