Gravity Deals&reg; 3 in 1 Professional Pen-Shape Pen Shaped Electric Nail Art Drill File Grinder Manicure Pedicure Drill File Makeup Tool with 5 Bits-Assorted Colors Powered by 2 AA batteries (NOT INCLUDED) removing dead skin nail corners Perfect tool for pedicure and manicure This product uses two AA batteries, high-quality motor runs without noise Using ergonomic design, stylish, feel good