WHY CHOOSE THIS?      3pcs Tungsten Carbide Nail File Bit: Includes Fine Grit, Medium Grit, Coarse Grit. Remove acrylic and hard gel, polish nail surface, sidewalls, and cuticles part.    3pcs Ceramic Acrylic Gel Nail Bit Kit Coarse Grit: Clean the cuticle area, sidewalls, and under the nail. Ceramic Barrel Bit: Smoothen, shape, and polish nail gel surface. Fine Grit: Remove nail design close to the cuticle area.      6pcs Diamond Cuticle Electric Nail File: Professional for nail beautify, nail polishing, nail clear and care, peeling, and removing dead skin.   1pcs Brush: Great for getting into the grooves to clean off each bit after use.     NOTES: Go slowly and practice the speed and force of your drill when using these nail bits.